It appears that “Many bloggers see their online journals as form of therapy“.
Mary Madden of Pew Internet reports:
Blogging combines two recommended techniques for people to work through problems: writing in a journal and using a computer to type out thoughts. Some bloggers say the extra dimension of posting thoughts on the Web enables them to broach difficult subjects with loved ones, as well as reap support from a virtual community of people they don’t know.
Read more here.
Sidenote: I write this as I wait in my car for a colleague who’s shopping at Staples. It’s great having free wi-fi from the store reach the parking lot. :-)