Hypothetically speaking (of course)

As I was driving into work this morning I was considering various effects of writing a blog. The one that caused me most interest was this one:

Imagine I was applying for a job and my prospective employer (being the clever person he/she is - I wouldn't work for a someone who wasn't) joined the dots and connected my email address to my blog. They then had a good read of my blog and made an employment decision based on what they had read.

Presumably a blog reflects my true character more than an interview - I get nervous in interviews - so would I be better sending a prospective employer to my blog? No. I'd be better off trying to get rid of my nervousness and planning how I want the interview to go - just as I sometimes do a blog entry. Obviously things change as interviews/blogs unfold but to begin with a plan usually means I would be better-equipped to handle changes in either situation.

There aren't many opportunities to edit during an interview so it's even more important to know what you want to achieve during the short time you have. Sales anyone?