CNBC caught up with Facebook investor Marc Andreessen at the +WIRED Business conference in NYC today.

Where does Andreessen see the biggest investment opportunity right now? Take a guess in the comments section below, and then watch Julia's interview for the answer.

FYI: You can follow our live tweets from #WiredBizCon on @CNBCSocial. CNBC's +Eli Langer is tweeting all day. Twitter's Dick Costolo will speak in about an hour.
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