Greylock invests in media management company WhoSay

The platform lets celebrities publish content to social and mainstream media

A little celebrity goes a long way.  For media management platform WhoSay, its bevy of celebrity clients was enough to pique the interest of Greylock Partners, which just invested an undisclosed amount in the company.  Greylock joins existing investors Amazon and High Peak Ventures.  In March 2010, WhoSay raised $2.38 million in a Series A round of funding.

In a sense, the WhoSay platform mimics a social marketing platform in that it allows celebrities to easily publish content to social networking sites like Facebook, Twitter, or Tumblr individually, or by clicking on settings that let them publish to all.  They can also grant access to their WhoSay account to publicists, managers, and anyone else they choose in order to post the latest videos, photos, and other content for their fans’ consumption.  The platform also lets celebrity clients post to mainstream media as well.

Among the many celebrities currently using the platform are Katie Couric, Brooke Burke, Jennifer Lopez, and Eva Longoria.  The service is available through invitation only, and celebrity clients can sign up through a taleny agency, public relations firm, or management firm.

Based in New York with offices in LA and London, WhoSay has been doing pretty well for itself.

“WhoSay has seen tremendous growth both in terms of number of clients as well as content being created by celebrities,” WhoSay CEO Steve Ellis tells me. “WhoSay now has more than several hundred celebrity clients that, in total, have more than 700 highly engaged fans.”

Ellis did not disclose what kind of revenue growth WhoSay has seen.

“WhoSay has found a way to make this engagement process easier for celebrities which, in turn, gives fans more of the unique and authentic content from major influencers that has rarely been available before,” said David Sze of Greylock Partners, in a statement. “The quality of the celebrities already active on WhoSay leads to word of mouth growth to other major celebrities looking to solve the same challenges.”