Cashmore speaking to the crowd at last night's event.

Last night at Edelman’s New York offices, Mashable officially launched Mashable Follow, the site’s “new social layer” that will enable readers to find and follow their favorite topics, share stories to multiple social networks at once and follow other Mashable readers who are of interest, among other features.

Mashable founder Pete Cashmore addressed the crowd in attendance, and noted that the service had already added “thousands of sign ups” within the first few hours of launching.

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