Yep you need a logo to replace the google ads. The mmmtalk.com text is too small and does not stand out at all not to mention it is squeezed in with the ad links. I like your sites tone of colours, good work.
remove sessions from URl - and add nofollow to links leaded to user profiles - it will help you with ranking
The red text on the grey is very hard to read - the yellow background does NOT match the rest of the skin and is an outright eyesore, the percentage side margins are a waste of screen real-estate at larger resolutions, the fixed size px fonts are next to useless on large font/120 dpi machines... and that's before we even talk about code. The inlined scripting is a waste of bandwidth, as are the endless redundant classes, unneccessary div's, etc, etc... It's a good sign something is wrong when you have 80k of markup and 113k of javascripts for 8k of content... Though much of that is just the typical vBull bloat.