SchoolFeed, a popular Facebook app that connects high school classmates, has been acquired in a deal of undisclosed size by United Online. The new unit will be combined with United Online’s Classmates.com and StayFriends business, bolstering their presence on Facebook. It will be operated under Seattle-based Memory Lane, formerly Classmates.com.

Founded by RockYou creator Lance Tokuda, SchoolFeed now claims more than 19 million members and is adding about 100,000 new registrations per day. Tokuda and his team plan to join MemoryLane as part of the deal.

“We expect the acquisition of SchoolFeed by Memory Lane to solidify our Classmates service as the premier high school social media platform in the U.S.,” said United Online CEO Mark R. Goldston in a press release.

Memory Lane was founded in 1995  under the Classmates moniker. It was acquired by United Online for about $100 million in cash in 2004.

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