According to blogger Brian Krebs, a group of hackers have eviscerated an underground hacker forum by posting database dumps of their private information and communication, including email addresses and private messages sent between users.
They have to sign a confidentiality agreement, agree not to spill any information before the official product announcement, and delete all "unannounced HP product information, including postings made by participants in the website or forum within 48 hours of the posting" or risk being kicked out of the evangelist program (which means no hook ups on reviews) and face possible legal action by HP.