I just wanted to alert you on a new scam that is going around on Facebook. It comes in the form of an invite to a group called “Dell Laptop Giveaway (1 in 2 people win one Laptop)” at http://www.facebook.com/group.php?gid=355563360211
BEWARE! The instructions stated actually collects your entire friends list and spams them with this invite and in no way enters you into any sweepstakes. This is another classic example of a deal too good to be true. As of writing this post, about 47000 people have joined the group and likely fell for this trick.
Resolution: IGNORE the invite and help spread the word about it. Do NOT do what the instructions tell you to do.
EDIT (11:53 EST): Looks like Facebook took down that rather quickly after I reported it. But still a lesson to be learned about carefully reading what you see.