I can't fathom who's falling for these Twitter hacks with BTC.
1. Bitcoin itself is not an easy thing to use. So you have to relatively savvy to even be able to send some money using Bitcoin. (Maybe it's easier now – I could be wrong about this.)
2. In what possible scenario could any reasonably intelligent person think that it would be true that a prominent person would offer to send you back double what you sent them? Why would anyone do that?
3. Seriously. How does that not scream scam??
A tightly knit group of souls who aren't dicks.