It is believed the virus is programmed to delete some computer files, including MP3 music files and images, as well as raiding email addresses to multiply itself and send itself and other e-mails onwards.
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.