While this will be a problem for other sites, nothing will actually change in terms of stopping piracy. You shut one down, more pop up, most of which are underground. Hell, IRC is still infested with places to get almost anything and the RIAA hasn't even tried attacking servers that allow the distribution of copyright material. Basically, they're getting "filthy rich" while losing the battle. So I don't see them stopping. Way too profitable for them to just give up.