I think it's just lame that a site like this could be accused of copyright infringement, unless it's a text-only post or a comment. Linking to copyrighted material should not be illegal - the DMCA takedown notice should have to be directed at the linked site, not the linking site. It's not YC's job (or Google's job) to fight copyright infringement by policing their indexes.

But more importantly, it shouldn't be the job of small organizations with few resources to have to create a DMCA policy like this, much less enforce it.