No, this isn't some crazy scammy, seedy thing. This is an actual Microsoft rewards program. Here's the lowdown:
You need to download a Bing toolbar:
Then sign in with your Windows Live ID, you get 200 (or 250, cannot remember, and while I could check the link I JUST gave, I really am that lazy) points (reward points, not microsoft points, you convert reward points into microsoft points, and other rewards as well, if you wish).
Use the toolbar, and do some other offers they provide, you get more points.
Here's the catch, it only works in IE (I also heard it works with Firefox, but very buggy).
Also, I cannot get the damn thing to track my points, so it's not working for me. Their solution? Go to the FAQ, or Support. The FAQ tells you to go to Support, and the Support is...just the FAQ. Good going, Microsoft. If anyone knows what's up with that, I'd love to hear it.
I like parenthesis.