I was on lifehacker reading up on their best apps for WP7. There was a app called "NewsRoom" that's pretty much a RSS reader. It's pretty great to have one spot to check on all your favorite sites. I use it mainly for tech and sports sites, and it works like a champ. It's pricey for a app, $4.99, but I's pretty slick.
PS: It also has a free trail available.
PS: It also has a free trail available.