Although Rob and Taylor have confirmed they do not have Twitter accounts, Peter is going to have one of them Tweet when he gets to 1M followers:

... only 74314 to go!
However, as was just confirmed as Mr World Twitternelli... not quite the same ring as "PFach" but if it'll get a blue bird ;)

I think that's worth some Rob and Taylor love... don't you?!
- Lorabell
P.s.
Please keep voting TwiCrack for Twilight Tweeter Fan!