Russian investor Yuri Milner has a voracious appetite for Web companies, having plowed hundreds of millions of dollars buying stakes in companies like Facebook and Zynga, and buying instant messaging service ICQ outright.

And he’s not finished.

In an interview with Britain’s Sunday Telegraph, Milner, the CEO of Digital Sky Technologies, said he was eyeing a few dozen Internet companies around the world for new deals.

TECH-SUMMIT/TWITTERWhile Milner declined to name any specific investment targets, he pointedly refused to rule out buying a stake in Twitter, according to the article.

So are DST and Twitter talking?

Funnily enough, Reuters asked Twitter COO Dick Costolo that very question last week during the Reuters Global Technology Summit.

The query elicited a chuckle from Costolo who then provided the following answer that doesn’t specifically rule out the possibility that the two companies could have talked.