Originally Posted by Nautilus

Yes only a little bit. Most of them check where DMCA is coming from, and would react only if it is sent from a business e-mail address, and you can't fake a ton of those.

Some filehosters like rapidshare are known to delete anything upon first request no matter where the report is coming from - back in the day when rapidshare was THE hoster many uploaders used that to get rid of their competition for better link placements. But even rapidshare had (or has, I don't know) its limits - they won't remove 100K links upon DMCA sent from a gmail account.

But that's pretty uncommon - most of the rapidshare clones are having it on their DMCA page now that they'll process only those takedown requests sent from business e-mail addresses. Guess most tubes are like that too.