I heard about Powerplus before and knew it was an addon like Plus!, but you're right about how most people believe everything they read on non-official sites.
There are e-mails going around which say that if you send it forward x-times you'll receive msn messenger 7 or another one wich says you'll receive animated emoticons you can use in msn messenger. You can't imagine how many people actually send it forward
, it's getting ridiculous.