I don't like that the homepage says "free, free, free", then reveals that it's charging recruiters. This is perfectly reasonable way to monetise, but it's not a free platform - it's a platform that charges the recruiters.
I somewhat dislike the idea that you're still essentially stuck with the recruiter in the middle. And I fear that like any other directory it quickly turns into a spam platform. Candidates bugged by unwanted phone calls, startups digging through piles of recommendations...