background is too plain. i don't know if your line " Welcome to Mateable: Don't be afraid to sign up... Membership is free! Mateable is a place to find a date or just find a friend. " should be in 2 different color background??? change the font syle and size for this. no other comment for now..
Nice site..I would make the "Rock You" ad at the bottom a little smaller. It caught my eye more than anything else on the site (maybe because it was moving).
A variety of applied styles impresses. Imposition on tables - it is good, but happens better. Workmanship satisfactory, balancing on the verge of admissible. Functionality on an average level. Most likely, the visitor will leave this site quickly. Design greyish and ordinary. Its applicability - to provide comfortable viewing the document. Page quite self-sufficient. In sense it is, enough, that it will be seen by the founder, about visitors, similar, the head did not hurt it. The diagram:
It looks good.. But it would be better if you change the bg color of the upper welcome box. Blue or green color with some gradient will do the effect. Also keep some space between the text and the border...it will look nice..