Having faith in the wisdom of the crowd tends to pay off, unless of course you're a witch. Or at Altamont. For useful wisdom from a drink-loving crowd, hit BeerChooser.
From a craft-crazy couple of homebrewers, BC's a fresh site dedicated to suggesting new suds you'll like Netflix-style, preventing you from swilling anything that might offend your delicate tastes, though if you're deciding on your fourth beer that probably includes...nothing. Start by rating each beer (complete with label images and tasting notes), on a scale of 1-5 mugs; there's also the option of tacking on additional thoughts via anything from one-word tags to reviews of up to 2,000 characters, in case the internet needs to know "when spilled, impossible to get smell out of belly button". Once you've given adequate feedback, you'll get specific sud-ggestions, plus a "% Like You" function'll help identify like-minded hops enthusiasts, with still further recs coming from the site's beers of the day and week, which currently highlights the Maui Brewing Company's CoCoNut porter, whose aroma of toasted coconut really helps it come out of its shell. Or maybe it's the booze.
Because lugging a computer around while drinking is fraught with peril, they have plans to unveil an iPhone app to facilitate brew experimentation anywhere and everywhere, useful if it's hot as an oven, but not so much when under a terrifying stampede.