I wondered the same thing about your fourth question, not that I write scripts.
Shannen doesn't have a Facebook, MySpace, etc. as I bet many people on here will tell you. Dianna checked that out.
Shannen has also said that she doesn't like to watch herself, she said, I think it was the CW interview, that she's only seen a few of her own projects and I know the Heathers is one of them and probably anything she directed or produced. I bet she watched the episode of Scare Tactics when she pranked her friends
Sorry for replying, I know it's not the same as Shannen but I thought at least you could get a quick answer to those first two!
I love the third and fourth questions!
*hugs*
xoxoxo