There’s a detailed step by step tutorial for turning your web host into a socks5 proxy server.
Basically, you use PuTTY to utilize the SSH connection to the web hosting server to be an alternative transport of all traffic between your personal computer browser (or any other web clients such as FTP programs or IM) and the destination site (such as facebook or myspace). Of course, all the transfer will be billed in your web hosting subscription.
Not bad at all, if you have some large chunks of extraly available transfer to spare from your current web hosting plan. It’s simply the most stable and usable proxy server you can get and make for yourself, much better than the servers in all the un*available* proxy servers lists you can find online.