CopyBlogger. CopyBlogger stands out from all the marketing blogs I read because it teaches you how to write better. The better you write, the more you write. The more you write, the more press you get. It's that simple.
Fistful of Talent. To succeed in staffing you need to live in the world of your adversary, which often is the HR manager. No blog bridges the gap between recruiter and HR better than Fistful.
Peter Gold. Peter tells it straight and gets into the Web 2.0 angle of recruiting like no one. Plus you get the charm of the UK perspective.