I didnt do a single thing. Its weird. I dont know what happend. I just made the site, then waiting one month and started generating 1000 uniques a day. Absolutely nothing. Just a nice design.
Check out my proxy secrets thread. SEO is the best way to get high quality traffic. http://forums.digitalpoint.com/showthread.php?t=278181
I've had little success with topsites as a mechanism for promotion. I brought a fresh one up two weeks ago and the only promotion I did was submit it to http://www.theproxyindex.com/ and http://www.myspaceproxyindex.com/ and within a week I was getting 100+ uniques per day and climbing. Also, I have found that a link on the front page of an active proxy is worth 10 topsite submissions. Sure others will disagree.
As you can see, I think the proxy only became popular because it was targeted by a site for all its outgoing links. I later blocked the site anyway because I didnt like its content, but im sure thats probably one of the reasons for the sucess. The proxy had a high traffic site use it.