In and article in the Blogger Knowledge section Rebecca Blood presents the authoritative and finite list of reasons why someone would maintain a blog: information sharing, reputation building, and personal expression. I have the fourth to add - even though this might be also labeled personal expression in a sense - namely: THERAPY. The healing effect of keeping track of one's unimportant errands and ripples of the mind is beyond question. It keeps me relatively sane. It's not about returning to the state of "perfect health" (in every sense of the word "health") but rather choosing therapy as a way through life.