In many of the schools, colleges, Offices & other places many of the websites would be blocked like facebook, orkut, youtube etc. You can use these proxy sites to access to those blocked sites or else if you don't want your IP address to be detected or say if a site is blocked for your country, You can use the following proxy sites to access them. There is no need for registration or any account. You can just go to the site & enter the site name where you want to go in the site. That's it!
best ip changer proxy: www.newipnow.com
List of proxy sites
http://www.webproxysite.com
http://broxy.info
http://hidemyhead.us
http://sspeed.info
http://facelessbook.info
http://ipen.info
http://ripyou.com
http://www.azproxy.info
http://proxycommander.com
http://proxytwitter.info
http://ezunblock.com
http://integratedproxy.com
http://www.hidingnow.com
http://longsurf.co.cc
http://dinosurfer.info
http://windowz7.net
http://proxytobebo.com
http://ninjazone.info
http://www.liat.info
http://www.youtubeone.info
http://proxywebsite.ca
http://www.freeall14.info
http://www.passthe.net
http://www.nowsee.info
http://personalunblocker.com
http://onlineproxy.ca
http://schoolproxy.com
http://www.proxy62.com/
http://www.dontblockthis.info/
http://obeo.info
http://irip.info
http://obar.info
http://obad.info
http://irim.info
http://otip.info
http://orob.info