I asked how it is done as In several chat's I see some saying that they have "spoofed"THIER Ip
Those people may be using BNCs or vhosts to hide their host name/IP address. They are bs'ing you. I know that it is possible to have 2 way communication when spoofing an IP as my friend was showing off to me, though he can't do it for anything as complex as web surfing. And as for proxies, here is the thing. Like chsh said, not all hide your IP address. The ones that do not are called transparent proxies and the ones that do are called non-transparent proxies. Maybe a search on google would yield some non-transparent proxies for you to use. And as for tiny hiding you IP address, I have used tiny and I have never seen it hide my IP address, I have tried going to sites and seeing if tiny made my machine use some kind of proxy or something in an attempt to see if it was trying to hide my IP address, well, nothing. I didn't think it would have.