I would think that most people have by now. But, I'm not going to actually assume anything 'cause you know what they say about that don't you? No. Get your head out of the gutter! Assumption is the lowest form of knowledge!
For those of you that may not know - you can earn points (or Swagbucks) by using the Swagbucks search engine instead of google, yahoo, ask.com or whatever. You can also earn Swagbucks if your friends sign up under you whenever they search. Of course, you can earn Swagbucks other ways too. But, it doesn't change your life at all to earn them this way. I'm guessing you already use some sort of search engine, anyway.
You can install the search engine right on your toolbar to make it stupid easy to use. If you like, you can also make it your homepage.
You see this book? It came for me in the mail today. Yay! I cashed in my Swagbucks for $20 worth of Amazon.com gift cards and bought it with that. After shipping and handling it came to $20.69 - so I only had to pay the 69 cent difference. I can handle that! If I had wanted to wait longer to buy it I could have saved more Swagbucks for it. But, I'm just a little impatient like that.
So, anyway, if you like free stuff (who doesn't) you should really sign up to start receiving Swagbucks when you do an internet search. I'm just sayin'...