Teen Social Network myYearbook Gets $13 Million

myYearbook, a social network for teenagers that launched in 2005, has raised $13 million in a Series B funding round led by Norwest Venture Partners, US Venture Partners, and First Round Capital. The new round brings the company’s total funding to $18.6 million.

myYearbook says it sees 10 million unique visitors monthly, and also makes the claim that it is the third largest social network in the US. (Not quite. It is only a fraction of the size of MySpace or Facebook, and Bebo and imeem also attract more monthly unique visitors. According to comScore, myYearbook had 4.5 million unique visitors in June, versus 5.2 million for Bebo and 6.4 million for imeem). When we last wrote about them, there was speculation that the site may have more high school users than Facebook. This is almost certainly no longer the case. Facebook has seen dramatic growth since that time, with 37.4 million uniques in June, with 10 percent of those between the ages of 12 and 17, says comScore. MyYearbook has a larger percentage of users in that age group (23.8 percent), but less than a third as many total.

Still, myYearbook continues to produce impressive stats if you look at Hitwise, with 384% in year-over-year growth.

The site intends to use the money to further expand its feature set and reach out to new members. As part of the deal, Norwest Venture Partners’ Sergio Monsalve will join the company’s board of directors.