It used to be much better than what it is today, but yeah most of it is scams or ripoffs. I still use it but for different things: it stores a lot of previous ads so it's easy to see the ones associated with a phone number, and the 'reviewed' section contains the most reviewed of all time, so that is useful if you are traveling to a certain area and want to know who is really good/bad/noteworthy
I'd always search the number I get from alligator, just to make find some sort of review or something