Swagbucks

OK, so I've heard about these from two different people, and I was wondering if anyone else has heard anything.  I'll also post this on Facebook.

Swagbucks is a toolbar that you use as a search engine, and from what I've heard, the more people you tell about them, the more you get in return.  I'm utterly confused right now, since I have the same three swagbucks I received when I signed up.  Don't know how else to get them.  I learned some about them here:

http://newlifeonahomestead.com/2010/01/have-you-signed-up-for-swagbucks-yet/

and here:

http://heavenlyhomemakers.com/using-swagbucks-and-amazon-cards-for-organic-groceries

and here:

http://heavenlyhomemakers.com/another-happy-swagbucks-promotion

I don't know quite what to think, and was wondering if anyone could help me out.  Thanks.