Why should I use Ktunnel instead of some other proxy?

Unlike standard "open proxies", Ktunnel requires no special browser configuration. And unlike many proxies, cgi based or conventional, Ktunnel allows the HTTP Form Post method, which means that many websites that require logins will work with Ktunnel that will not work with the majority of free proxies. Finally, unless abuse becomes a problem, Ktunnel will also allow file downloads, whereas many proxies do not.