OK, I'm a bit late to this party. I finally officially joined the Security Bloggers Network. It looks like we are up to 207 blogs on the list, more than you will ever be able to read- but a great place to browse and find interesting content. Not all members are especially prolific bloggers, not all blogs are strictly Information Security focused, but there is a lot of good stuff over there. SBN has recently moved from Feedburner groups (due to changes apparently brought on by Google's acquisition of Feedburner) to Lijit- the good news there is that Lijit searches of the network are a great way to find posts on specific security topics.