This is a nice idea and the people involved have their hearts in the right place, so it would be quite unseemly to say anything disrespectful.

Well, it's neither really important or super-cool, and if we've redefined "sacrifice" to mean "not being on Twitter," then we need a new term for people who donate, say, money. But that wouldn't be celebritiffic enough, would it? Because here's what they're doing that's super-cool:

No idea what that means. The page for the charity is here, if you'd like to help.