I visit Bloglines more than any other website. Probably 3 or 4 times a day.
Bloglines is a free service that aggregates all of my favorite blogs onto one page for easy reading. They're plenty of these sites but Blogines is a very user friendly site that can be easily navigated on my laptop or BlackBerry. I'm not sure how they make money (my guess is they're charging for premium services or will be soon) but if you read a lot of blogs like I do they're definitely worth checking out.