Depends on what you want to do. But, really, the best solution is to use a VPN. There are free web proxies, but really, they kind of suck. Badly. I'm understating the case. Really.
I'd recommend that you use a decent one. It won't be free. I use Privacy.IO and am quite happy with it. But, it pops out in Sweden. There are a couple good articles on VPNs at Torrent Freak. Check those out.