Yeah I have a lot of problems with my mom seeing my facebook.
what I did was: I accepted her as a friend and (obviously) put "mom" status. then, whatever I put on my wall, I make sure is "mom" friendly.
then I could be my honest self in personal messages and on my friends' walls (ppl she doesn't know.)
"what mama don't know don't hurt her."
it's tough but there IS a way to get around ticking off mother dearest... lol... sigh.