Without some details like a list w/ credentials of the reviewers, it comes off as less than credible. I'd wanna know who was reviewing me and what makes them qualified. Even if they're not the biggest of names, I'd be less leery if seeing more than 'verified artists'.
Calling Rap Genius "the #1 hip hop site" adds to this leeriness. Aside from the fact that it's not (no disrespect to Rap Genius), specifying a hip hop site as the success story on a page with limited details kind of pigeonholes it into seeming like a "rap thing" - potential artists that aren't making hip hop music may think they aren't qualified, or may become disinterested.