Like caltiger, this is one more free Internet Service. And you have to pay indirectly for using it.....1) your desktop area has to be sacrificed.
2) you must be ready to tolarate for hang ups or freezing of running application.3) you should forget about part of your memory resources if affordable, and so also disk space.
however, you can get the benifits from addbars if you have patience....provided.....as gathered from news......promoting company does not wind up its bussines...so best of luck.if u want to try for fun.