RSS MAD is the largest archive of RSS feeds on the internet. You don't need to go to other websites to read anymore!
I did a little poking around. There are bunch of categories like regional, society, gaming, business, and internet. RSS MAD also lets you save feeds and has a built in feed reader. A quick look at the bottom of the screen shows that there are only 111 subscribers to this new site so far.
I'm going to use it to find new feeds … but I'm probably going to stick to bloglines as my reader unless I see or hear something great about this new service.