Humorous, but I suspect that might be the opinion of the muslim extremists rather than right-leaning individuals, no matter what the satirists would like to believe.
Back on topic: As always, if you receive e-mails, be wary of clicking on links contained within regardless of the subject matter. Osama's death is but one of many recent phishing ploys, though it happens to be one of the more popular rising trends. Furthermore, some types of malware, once it infects a system, will gather names and e-mail addresses of that person's contacts; this way, it can attach itself (or point to a link hosting malware) to messages that look somewhat legitimate. I realize I repeat myself regularly on this particular train of thought, but until people stop finding creative ways to get their machines cracked, we will continue to harp on security, security, security.