Despite all its flaws, Yelp is the best solution I've had for finding good restaurants and other services. I love being able to read reviews by locals I might randomly see, browse through their profiles and see what else they like. In the vast majority of cases the crowdsourced reviews are awesome. Unfortunately their verification and filtering system is weak, and needs major improvement (an identity verification program would be awesome). Yelp is still a great service overall, and the fact that I use it over ZAGAT or anything else tells you a lot about how effective it is.