Recently I've been using the newly redesigned Google Reader and it's great! I'm finding Reader to be the best way to 'keep up' with all of the sites I regularly visit. Probably the most amazing thing about Reader for me is the way new content is automatically retrieved. To advance, all I do is hit the page down button and Reader does the rest - talk about convenient!
Especially for Digg and other big sites, I'm finding that Reader is the way to go. Thanks to Reader, now I at least have a chance of staying up to date with the seemingly endless amount of posts from those sites. Highly recommmended!