Yeah I'm with everyone else you're going to need a dedicated or a very large VPS. Shared is simply not going to work even if you can find the bandwidth requirements any half decent host is going to notice the proxy within a few days. These things suck bandwidth like crazy along with CPU so they are pretty easy to spot oh and the fact once they get linked up people start using them like crazy and use them for image links and such. Of course this is assuming there is no hotlink protection in place in the script.
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