Here is a very powerful online tool using which you can browse internet absolutely anonymous.The name of the stuff is Hide My Ass.Along with hiding your ip address,you can also use this service to bypass your school/work/college web filters.It can bypass restrictions and can hide your browser history.

Note : If Hide My Ass! is blocked, or you wish to use other free proxy sites, then you can see the full list here!

Links: Hide My Ass | Proxy List | Anonymous EMail