free vpn or working proxy need

hi every body. i am 4rom iran.
i need a 100% free workin vpn that work or a working proxy in order to open social networking website such as twiter-face book0my space and ...which are blocked in my country. please answer soon . i emphesize on my request .
please .(recomende us or uk)
thanks again .byyyyyy

digitalcybersoft.com

try this site and use the free proxies..
i dun know if u can get a free vpn...

u can use proxyswitcher..it is similar to a vpn...