Hacker News Reader

There was a mistake in the article. The additional investment was from SV Angel and Yuri Milner, not Y Combinator. We apologize for the confusion, and the mistake has been corrected.

I wonder if this refers to YC investing money to avoid being diluted by this funding round?

I thought YC specifically did not do follow-on investments because of (paraphrase) what it'd indicate about the companies they don't follow-on with.