David Herron .com

Daily Radar operates a broad set of blog and podcast directories. Each of the sites focuses on a broad topical area, and the blogs/podcasts added to the specific sites have to fit that broad topical area. Within each of their sites there are a small set of categories.

Each listed blog/podcast has its own page with a summary and a list of items. The items aggregated from each blog/podcast also are listed elsewhere and is the main content of the site. Site users can vote up/down on aggregated items and the voting helps keep stuff on the front page.

Links from aggregated items to the original site is done with a real link (no rel="nofollow").

It's a really good site, really well thought out, and I highly recommend getting your blog listed on this site and even taking part in the site.