Limelight Networks Updates Revenue Guidance for Fourth-Quarter 2007to High End of Previously Issued Range

TEMPE, Ariz., Jan. 11, 2008 – Limelight Networks (Nasdaq:LLNW), a leading content delivery network (CDN) for digital media, today announced that it believes that fourth-quarter 2007 non-GAAP revenue will be in the range of $29.3 million to $30.0 million, which is at the high end of its previously issued guidance range for the period. The difference between GAAP revenue and non-GAAP revenue represents net Custom CDN Services revenue of $0.7 million which is deferred for GAAP purposes.

This press release contains forward-looking statements concerning the outlook for the Company’s revenues for the fourth-quarter of 2007. Forward-looking statements are not guarantees and are subject to a number of risks and uncertainties that could cause actual results to differ materially including, but not limited to, final review of the results and amendments and preparation of quarterly financial statements, including consultation with our outside auditors. Accordingly, readers are cautioned not to place undue reliance on any forward-looking statements. The Company assumes no duty or obligation to update or revise any forward-looking statements for any reason.

Safe-Harbor Statement

This press release contains forward-looking statements concerning the company's operations and use of acquired technology and intellectual property. Forward-looking statements are not guarantees and are subject to a number of risks and uncertainties that could cause actual results to differ materially including, risks associated with the integration of acquired business operations and other risks described in the company’s quarter report on Form 10Q and other periodic reports filed with the Securities and Exchange Commission. The Company assumes no duty or obligation to update or revise any forward-looking statements for any reason

About Limelight Networks, Inc.

Limelight Networks, Inc. (NASDAQ: LLNW) provides on-demand software, platform and infrastructure services that help global businesses reach and engage audiences on any mobile or Internet-connected device, enabling them to enhance their brand presence, build stronger customer relationships, optimize their advertising, and monetize their digital assets. For more information, please visit http://www.limelightnetworks.com or follow us on Twitter at http://www.twitter.com/llnw/.

Media Contact:

Paul Alfieri of Limelight Networks, Inc.
+1-917-297-4241
palfieri@llnw.com