As I don't have a twitter account, I'd certainly hope you refrain from using it. I realize I'm probably one of three people left in the civilized world without one, but...
I couldn't promise any VTT time, as I never know when I'll be online or not, but I should be able to post often enough to satisfy a solid pbp game.
I'll also put together a short and sweet 4e adventure to run either after or concurrent with yours--I really think that's the best way to expand the world, to play in it and make it home. Will you be starting in your area of the Thrubmorten Fens?