The top part of the site looks very good, maybe the writing in the logo for your sites name could be a little more clearer. Going further down the page on the homepage I think it starts getting a little unprofessional where it has that banner ad, that adsense ad and the digg icon. It doesn't look quite right and probably could be adjust to look at little better. Good luck with your site anyway.
Nice site, but have to agree that the advertising part can be done better. Try and make it less obtrusive.
I am looking at it from the eyes of a search engine and you are missing some basic seo coding elements. No H1 tag on the home page Title - I understand you need to brand, but you should have your keyword(s) placed first, then your brand name. No meta description tag - this is important as this is the snippet of code Google uses in the results page. FactPile