@swapnil90: he/she's been starting a lot of threads the past few days, asking very similar questions.
maybe its because the site isn't finished, has no content, advert just says advertise here which I can't imagine anyone wanting to click........ Finish the site and add some content to the first page, visitors won't reach for that red x button as fast
Yes id say definiltely get something concrete on the main page. All i see is an adbrite ad and numbers. Get some of the links on the sidebar active also. Get a better way to organize and search the list. Add the ads to the top of the list pages instead of bottom. Ad a "featured game" type thing somewhere or something. Just get people to stay on the site a bit longer and youll have a better chance of getting a click i think. Regarding the actual ad content right now im seeing an ad for making money at home. Try getting an ad more related to gaming as that is what your site is about. Adsense may be a good idea. I think it would be accurate to tell you to put a bit more effort in before you start asking for ad placement advice. Hope I helped anyway.