Browse big famous websites if you see AFFILIATE link in lower part mostly it will be in tiny words mail them directly they review your website if they like they will serve you ads directly.. apart from that chitika is good but it won't show ads for non-usa people info-links sucks you have to wait for years and years to get decent money else stop thinking about making money concentrate on your site do work hard get nice page rank and good ratings..people will approach you to place their ads on your website
To be honest, there's no replacement for adsense. Its by far the best revenue generator. However, in its absence, I've used Technorati, they do well. Also try advertising.com and Tribalfusion (needs goo traffic)
I agree with this post the most - Bidvertiser did not work for me. Just my two cents here. I will try out clicksor and see how that works for me. Great question btw.
I also suggest you stay away from Bidvertiser. Didn't have a really nice experience with them in the later stages. At first it was ok then acceptable then uncomfortable then disgusting. Though as I have stopped for sometime now using Bidvertiser its possible that they are starting to change to become better? It won't hurt to try and see for yourself. Different websites may have different experience.