Press Release

ON24, Inc. Announces Launch of Bannercast Live for Advertisers and Marketers

ON24's Bannercast Live Transforms Banner Advertising With Live, In-Banner Webcasts for Increased Viewer Interaction

San Francisco, CA – November 13, 2006 – ON24, Inc., the global leader in webcasting and video communications solutions, today announced the market availability of Bannercast Live which transforms current banner advertising into a live, in-banner streaming video event that generates an unprecedented level of viewer interaction. Incorporating the interactivity of webcasting with the targeted abilities of banner advertising, Bannercast Live benefits companies with increased viewer interactivity and exposure to a company's message, while benefiting content providers when viewers spend more time on the website to view the live, in-banner webcast.

"Internet marketers and advertisers are constantly seeking novel ways of interacting with customers on the Internet," said Sharat Sharan, President and CEO of ON24. "With ON24's leadership in webcasting technology, we are introducing live, in-banner webcasting ads that will increase the level of user interactivity and involvement not previously available."

Unlike a pop-up ad window or typical banner ad that diverts Internet users to an alternate website, Bannercast Live uses the footprint of the existing banner advertisement to deliver a company's message via a live, in-banner webcast. ON24 is currently running a Bannercast Live series for Cisco Systems, with the first campaign viewed on the New York Times, BusinessWeek and Cisco's corporate websites on October 31, 2006 at 12:00 pm EST.

Without leaving the space of the banner ad or website, Bannercast Live transitions from a banner ad into an interactive, live webcast. The typical Bannercast Live ad will promote the live webcast with a promotional message. To build momentum and excitement, the Bannercast Live ad will transition into a live countdown timer to mark the start of the webcast. When the live event commences, viewers can click on the Bannercast Live banner to view a live video broadcast, as well as register to fully interact with the presenter. Once the event finishes, a separate post-event message follows.

Key features:

• Interactive features such as Q&A, document downloads, website links and more
• Versatile display properties allow Bannercast to be rendered in standard banner ad sizes (IMU) and embedded into a website.
• Registration to collect viewer information and control document distribution
• Real-time reporting provides valuable information about registrants and viewing times
• Sales force automation data transferring options
• Dynamic, multi-phased presentation banner for live and on-demand uses

ON24's Video Communications Solutions
Bannercast Live is a part of ON24's Video Communications Solutions, a portfolio of rich media video applications that enable companies to cost-effectively incorporate video and rich media communications into their corporate communications and interactive marketing strategies. ON24's Video Communications Solutions also include:

• Bannercast On-Demand, an interactive advertising and marketing application for delivering rich media content within an in-banner advertisement for lead generation and brand awareness campaigns on the Internet.
• Rich Media Webcast, a high-production quality on-demand Flash video webcast with animated graphs, illustrations, and slide that is integrated with registration, reporting and interactive features.
• Videocast Live, which uses ON24's global webcasting technologies and a company's own video conferencing equipment for streaming events and other types of communications to hundreds or even thousands of attendees both live and on-demand.

About ON24, Inc.
ON24 is the global leader of webcasting and video communications solutions. More than 500 leading organizations including Cardinal Health, Cisco Systems, Motorola, CMP Media, Credit Suisse, Department of Education, Hewlett-Packard, National Science Foundation, and Samsung use ON24 for activities such as lead generation, internal communications, conferences and events, product launches, sales training, continuing professional education, and executive announcements. The Company headquarters is in San Francisco, with offices in Washington, D.C., New York and London.

“A World of Webcasting Solutions. One Webcasting Provider”™ - is a trademark of ON24.

“Insight24^SM” - your B2B rich media network for information, intelligence, and insight - is a service mark of ON24 Inc.