I think Moms (and any adult) who engages in cyberbullying should be punished to the full extent that the law allows. How in the world can we expect our children to follow our example when there are adults out there acting like children. Its a disgrace and very sad, actually. We can't take the tools away (Facebook, Craiglist, etc) but we can put policies and consequences in place that let potential adult cyberbullies know that it won't be tolerated.
BTW, welcome to the BlogFrog and congrats on your new community!
Holly at TheBlogFrog