Re: And people trust goo ...
The critical point is that the revocation goes down the chain. If the project you depend on runs afoul of the incredibly broad +PATENTS clause, you end up dragged into the fun and games because you're now dependent on a copyright-infringing project, so probably copyright infringing yourself.
The broadness of the +PATENTS clause is particularly concerning for the ASF because of the number of Silicon Valley-employed professional developers it has. It is entirely possible for someone to be a contributor to a project, a Member of the ASF (i.e. Foundation shareholder) and an Employee (and probably shareholder) of a commercial company very likely in competition with Facebook.
The potential for one of these entities coming into conflict with Facebook is high, and the potential knock on effect for the ASF and everyone who depends on the ASF is overwhelming.