As someone else pointed out, the one thing that makes this interesting is, instead of bothering to do the legal legwork first to PROVE they cover vp8, they simply make vague threats to scare people out of using it, which I highly doubt is how the patent system was meant to be used.
Are vague threats illegal? Do legal threats have to be specific? It seems like one of the most common threats I know of is, "I'm going to sue you!" It's usually not a specific, "I'm going to sue you based on violation of XYZ". It's usually a very vague statement. Is that generally illegal, but just not enforced?
