I was wondering what would be the best way to market a proxy topsites such as http://proxytopsites.biz ?? what marketing strategies should i pull?
Well, try to get big-named proxy websites to use your topsite, and promotion from there should be easy. The key is to attract big-named proxies to your topsite, and it'll grow from there.
Go to another topsite, collect the emails of all the different proxies listed there, and email them advertising your topsite. Most proxy owners know that joining as many topsites as possible will bring them way more traffic, so you're sure to get a lot of proxies that way.