"They saw us as a "distributor" - even though we were using Bittorrent for legitimate reasons. Once we shut them out, their vast network of servers were automatically programmed to implement a scorched earth policy, and shut us down in turn.
Louderback says he called MediaDefender and was told that it had indeed been injecting torrents into the Revision3 network without permission for months, but MediaDefender denied responsibility for the DOS attack.
That quote is from a C|Net news posting on the incident. This I expect to be a BIG deal!