Help Me Create a Top 10 SEM List for Blogs.com

The folks over at Six Apart have asked me to give them a list of Top 10 SEM blogs for their new service blogs.com. First thought, I thought I’d put it out to you and ask for your opinion: who do you think should be included and why?

Here’s a little bit of background information on blogs.com:

After owning the domain for 9 years, Six Apart launched blogs.com in August 2008. It’s a blog directory with categories that include business, entertainment, news and politics, life, technology and student life.

Additionally, the site features top ten blog lists across various topics, some of which are written by Web celebs such as Craig Newmark (Craigslist), Chris Anderson (Wired), Marc Andreesen (Ning), and Sarah Lacy (BusinessWeek).

Now they’re looking for SEM specific blogs, and I want to give them the best of the best. The types of blogs that I’d like to include would be written by forward thinkers who can offer fresh opinions of the search industry, as well as some tacticians.

So I turn to you and ask:

Who do you think belongs on the Top Ten SEM blogs list?