For me this is a question that has been floating around for a number of years, for others it is just coming to the fore front. Take today, Techmeme, it is a topic on the front page, based on a post from Adam Darowski.
The simple answer to this question is no your blog is not your resume. Let me explain.
The resume provides a framework for you to summarise your skills and experience in a short easy to digest document. Your blog does not. This does not mean your blog is not a valuable tool in finding a new job or finding new employees. Adam puts in nicely:-
Blogging is the perfect way for a candidate to give an employer a more detailed sales pitch—to show they can “talk the talk” (as opposed to just fill a resume with buzzwords).
Basically your blog becomes part of your professional reputation and is a marketing tool to help recruiters and prospective employers find you. Bokardo gives us some great tips and points to remember about your blog and how to use it to enhance your professional reputation.
Remember only a smaller percentage of the population blogs and an even smaller percentage of recruiter know about blogs (I know they should). Therefore most of the time you will still have to play ball by the same rules if you want to land a dream job.
Remember your blog is about participating in the community, this will expand your professional network, which helps you land a job. I wrote about this a long time ago after Jeremy Zawodny called blogs “professional lubricant”.
Finally remember what happens online it fairly permanent and can be found in most search engines by a half way decent recruiter or employer. Who can forget last year’s Miss Universe publicity.
There is lots more discussion on this topic.