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/Peo, FreeWebSpace.net
It depends on network uplink speed, and what provider you go with. For IRC though, I'd recommend a dedicated server with a good budget of at least $150...
Hmm. That is not allowed on the most of the VPS and you can hope only for the specific one. In this case I think that you'd better ask for that on the DP forums. I have seen such issues are being discussed there.