Wine drinkers are intense. My father always makes sure that there is atleast 12% alcohol content in the wine and he says he's never found a bottle he doesn't like that is. However, he's not your average hard core wine drinker. For these people, sites are starting to pop up that let them be as intense as they want.

From TechCrunch, WineLog:

If you find a wine you like, you can add it to your own wine log. These pages have a permanent public URL for sharing (privacy is promised soon, along with RSS, blog widgets and other features). You can also send information on any wine entry directly to your cell phone via a text message.

From Jeff Clavier, Wine Spectator launches blogs:

The Wine Spectator is one of the leading US publications on the world of wine, featuring reviews, ratings, analysis, etc. The ratings are particularly influential when it comes to how well a given wine will sell, and for how much. Wine Spectator Online subscriptions ($49.5/yr) can be purchased separately from the magazine in order to access to their extensive wine ratings database, articles, etc. The latest addition to the content: blogs, developed by five of the editors/columnists.

Personally, I'll just stick to the recommendations I get from Rick at the Vin Bin.