Latest Scam Going Around Facebook

Sorry that I had to send this message.

Since Facebook has recently become very popular, has become the many complaints that Facebook has become unacceptably slow. The report shows that the reason is that Facebook has a number of non-active members and, secondly, many new Facebook members. We want to send this message to see whether you're active members or not. If you're active, please send this message to at least 15 users. Use the "Copy - Cut and Paste" to show that you are still active. Those who do not send this message within 2 weeks in, will be removed in order to get more space. Send this message to your friends to show me that you are still active, and do not want to be removed.

Facebook founder
Mark Zuckerberg

Why do people pull this crap. It's not just Facebook, but other sites too. What makes people/trolls lame enough to think they can pull this kind of stuff on anyone.
Like facebook is going to leave it up to users to let them know if the users are active or not. I'm pretty sure they know who is or not. But don't take my word for it, but I'm not buying into the spam.