I havent heard of a lot of folks being banned, around here, and if they have been they most likely had a severe TOS violation, something like child porn, or stealing other work, or even plagiarism. I don't know who your friend is or seen her work but she must have done something else than "try to expose the staff for their false accusations" to get her work pulled and banned.

Give the community a try, and don't guide yourself by what others say, you can push the envelope but dont cross the line, and you'll be fine.

Ask me a question, and I'll give you an answer.