I like Krzysztof's idea for blogging your resume - it's good for the resume reader and writer. [Paresh Suthar's Radio Weblog]
Yes! This is definitely a key part of what I wan't my blog to evolve into. I want very much to maintain a journal of my technical adventures. I don't really care if anyone ever looks at it.
I find that I feel very unfulfilled if I spend a large amount of time learning a new technology without anything tangible to show for it except for maybe some toy applications and throw-away code. Writing about what I learn gives me a much needed manifestation of my efforts.