Filed by Motient Corporation
                           Pursuant to Rule 425 under the Securities Act of 1933
                           Subject Company:  Rare Medium Group, Inc.
                           Motient Corporation and Rare Medium Group, Inc.
                           Commission File No. 0-13865


Caution Concerning Forward-Looking Statements

The press  release  includes  certain  "forward-looking  statements"  within the
meaning of the  Private  Securities  Litigation  Reform  Act of 1995,  including
statements  regarding the timing of the Motient  stockholder  meeting to approve
the reverse stock split, the liquidity,  marketability and overall perception of
Motient stock,  and the  consummation  and timing of the proposed merger between
Motient and Rare Medium Group, Inc.

These statements are based on management's  current expectations and are subject
to  uncertainty  and  changes  in  circumstances.   Actual  results  may  differ
materially  from these  expectations  due to disapproval by  stockholders of the
proposed reverse stock split, changes in global economic, business,  competitive
market and regulatory  factors,  financial markets,  the failure of the proposed
transaction  described above to be completed for any reason or the parties being
unable to recognize the benefits of the transaction.  More detailed  information
about those factors is contained in Motient's and Rare Medium's filings with the
Securities and Exchange Commission,  including Motient's  registration statement
on form S-4 (File No.  333-63826),  Motient's  annual report on Form 10K for the
year ended  December 31, 2000, and Motient's  quarterly  report on Form 10-Q for
the quarter ended June 30, 2001.

Motient and Rare Medium have filed a joint proxy  statement/prospectus  and will
be filing other relevant documents  concerning the proposed transaction with the
SEC.  INVESTORS ARE URGED TO READ THE JOINT PROXY  STATEMENT/PROSPECTUS  AND ANY
OTHER RELEVANT  DOCUMENTS FILED WITH THE SEC BECAUSE THEY WILL CONTAIN IMPORTANT
INFORMATION  ON THE  PROPOSED  TRANSACTION.  Investors  are able to  obtain  the
documents  free of charge  at the  SEC's  website  (www.sec.gov).  In  addition,
documents  filed  with the SEC by  Motient or Rare  Medium  with  respect to the
proposed  transaction  may be obtained free of charge by contacting  Rare Medium
Group,  Inc., 565 Fifth Avenue,  New York, New York 10017,  Attention:  Investor
Relations  (tel.:  212-883-6940) or Motient  Corporation,  10802 Parkridge Blvd,
Reston,  VA, 20191.  INVESTORS SHOULD READ THE JOINT PROXY  STATEMENT/PROSPECTUS
CAREFULLY BEFORE MAKING ANY VOTING OR INVESTMENT DECISION.

Motient  and  its  directors  and  executive   officers  may  be  deemed  to  be
participants  in the  solicitation  of proxies  from Motient  stockholders.  The
directors  and  executive  officers of Motient  include:  Gary  Parsons,  Walter
Purnell, Jack Shaw, Billy Parrot, Andrew Quartner, Jonelle St. John, W. Bartlett
Snell, David H. Engvall, and Dennis Matheson. Collectively, as of June 25, 2001,
the directors and executive officers of Motient beneficially owned approximately
2.65% of the outstanding shares of the company's common stock.  Stockholders may
obtain  additional  information  regarding the interests of such participants in
the  proposed  merger by reading  the joint proxy  statement/prospectus  when it
becomes available.


                                                           FOR IMMEDIATE RELEASE

Contact:  Eric Swank                                David Wonderling
          Vice President, Corporate Planning        Manager, Public Relations
          and Investor Relations                    (703) 716-6375
          (703) 758-6121                            david.wonderling@motient.com
          eric.swank@motient.com

                MOTIENT CORPORATION ANNOUNCES REVERSE STOCK SPLIT
             COINCIDENTAL WITH THE CLOSING OF THE RARE MEDIUM MERGER

   Proposal before shareholders as part of upcoming vote on Rare Medium merger

RESTON,  VA. - August 15, 2001 -- Motient  Corporation  (NASDAQ:MTNT)  announced
today that its Board of Directors  has approved a 1-for-10  reverse split of the
Company's outstanding common stock, subject to shareholder approval. The reverse
split will be implemented coincident with the Rare Medium merger and is intended
to also enable the Company to meet NASDAQ listing  requirements and increase its
marketability to investors.

"The  reverse  share  split is part of a series of actions,  including  the Rare
Medium  merger,  which we are taking to improve  our  balance  sheet and put the
company on an  improved  financial  footing  going  forward,"  stated  Walter V.
Purnell,  Jr.,  president and CEO of Motient.  Purnell added,  "Given the recent
pressure on our share price and in the best  interest  of our  shareholders,  we
felt that a reverse  share split was prudent to help improve the  liquidity  and
marketability of Motient."

The  reverse  stock  split  will be  voted  on by  shareholders  at the  special
shareholder's  meeting  on the  Rare  Medium  merger,  which is  expected  to be
scheduled for late September.

Upon the  effectiveness  of the reverse  stock split,  10 shares of common stock
will be converted and reclassified as one share of post-split  common stock, and
each existing stock  certificate  will represent  one-tenth the number of shares
shown thereon. Cash will be paid in lieu of fractional shares.

Motient also commented that a reverse stock split will not have an impact on the
value of its pending acquisition of Rare Medium; however, upon the effectiveness
of a reverse stock split,  the terms of Motient's Series A preferred stock to be
issued in the merger  would be equitably  adjusted to reflect the reverse  stock
split.

About Motient Corporation
Motient (www.motient.com) owns and operates an integrated  terrestrial/satellite
network and provides a wide range of two-way mobile and Internet  communications
services  principally to  business-to-business  customers and  enterprises.  The
company  provides  eLinkSM and  BlackBerryTM by Motient  two-way  wireless email
service to customers accessing email through corporate servers, Internet Service
Provider  (ISP) and Mail Service  Provider  (MSP)  accounts,  and paging network
suppliers.  Motient serves a variety of markets including mobile  professionals,
telemetry, transportation, field service, and nationwide voice dispatch offering
coverage to all 50 states,  Puerto Rico, the U.S. Virgin Islands,  and thousands
of miles of U. S. coastal waters.

                                       ###


eLink is a service mark of Motient Corporation.  The BlackBerry and RIM families
of related  marks,  images and  symbols  are the  exclusive  properties  of, and
trademarks of Research In Motion Limited and are used by permission. "BlackBerry
by Motient" - used by permission.

This press release  includes  certain  "forward-looking  statements"  within the
meaning of the  Private  Securities  Litigation  Reform  Act of 1995,  including
statements  regarding the timing of the Motient  stockholder  meeting to approve
the reverse stock split,  the liquidity,  marketability  and overall  perception
Motient stock,  and the  consummation  and timing of the proposed merger between
Motient and Rare Medium Group,  Inc. These  statements are based on management's
current   expectations   and  are   subject  to   uncertainty   and  changes  in
circumstances.  Actual results may differ materially from these expectations due
to disapproval by stockholders of the proposed  reverse stock split,  changes in
global economic, business,  competitive market and regulatory factors, financial
markets, the failure of the proposed merger to be completed or the parties being
unable to recognize the benefits of the transaction.  More detailed  information
about those factors is contained in Motient's  filings with the  Securities  and
Exchange  Commission,  including  Motient's  registration  statement on Form S-4
(File No.  333-63826),  Motient's  annual report on Form 10-K for the year ended
December 31, 2000, and Motient's  quarterly  report on Form 10-Q for the quarter
ended June 30, 2001.

Motient and Rare Medium have filed a joint proxy  statement/prospectus  and will
be filing other relevant documents  concerning the proposed transaction with the
SEC.  INVESTORS ARE URGED TO READ THE JOINT PROXY  STATEMENT/PROSPECTUS  AND ANY
OTHER RELEVANT  DOCUMENTS FILED WITH THE SEC BECAUSE THEY WILL CONTAIN IMPORTANT
INFORMATION  ON THE  PROPOSED  TRANSACTION.  Investors  are able to  obtain  the
documents  free of charge  at the  SEC's  website  (www.sec.gov).  In  addition,
documents  filed  with the SEC by  Motient or Rare  Medium  with  respect to the
proposed  transaction  may be obtained free of charge by contacting  Rare Medium
Group,  Inc., 565 Fifth Avenue,  New York, New York 10017,  Attention:  Investor
Relations  (tel.:  212-883-6940) or Motient  Corporation,  10802 Parkridge Blvd,
Reston,  VA, 20191.  INVESTORS SHOULD READ THE JOINT PROXY  STATEMENT/PROSPECTUS
CAREFULLY BEFORE MAKING ANY VOTING OR INVESTMENT DECISION.

Motient  and  its  directors  and  executive   officers  may  be  deemed  to  be
participants  in the  solicitation  of proxies  from Motient  stockholders.  The
directors  and  executive  officers of Motient  include:  Gary  Parsons,  Walter
Purnell, Jack Shaw, Billy Parrot, Andrew Quartner, Jonelle St. John, W. Bartlett
Snell, David H. Engvall, and Dennis Matheson. Collectively, as of June 25, 2001,
the directors and executive officers of Motient beneficially owned approximately
2.65% of the outstanding shares of the company's common stock.  Stockholders may
obtain  additional  information  regarding the interests of such participants in
the  proposed  merger by reading  the joint proxy  statement/prospectus  when it
becomes available.