Comcast's Plaxo acquisition has borne fruit beyond its social media address book roots with Tunerfish, aimed at pulling social networking features and TV into one website. Currently in closed alpha, it lets TV watchers note what they're watching and share with others, Foursquare style. No word on what being "mayor" of Chuck gets you (if it's not a discount at Subway we'll be disappointed) but the idea is to be able to keep an eye on what's trending amongst the larger pool of viewers or just your friends (who, presumably, have similar tastes. Of course there's Facebook and Twitter integration, and an iPhone app will be available when the beta launches in th
