As the original article said, most SV web companies claim to file patents as a defensive measure - so if they get sued by someone else, they can hit back. Suing first is extremely bad form.

> If we're calling out Yahoo's patents as junk, we should be doing the same for facebook and the rest

I don't see anyone saying that Facebook's patents are fine and Yahoo!'s are junk - Yahoo! are being criticised because they're attempting to enforce their junk patents. If Facebook attempted to force theirs they would get exactly the same flack for it.