Why maintain a /. journal when you have a blog?

Why do people have web logs?

What is the purpose of blogs?

Are they a wasteland of repeated information cluttering up the world wide web?

Are blogs a method of creating a personal home page for people that don't know how to create web sites and know nothing about web design?

Tell me what you think about blogs and why have they taken off in such a big way.

I'm researching numerous issues regarding making the move to Linux from Microsoft Windows on my Unix and Linux page. All of my research will be documented in some way, shape, or form. Please, feel free to comment on my "Moving to Linux" articles at any time or for any reason. All feedback (positive or negative) helps tremendously in making an educated decision.