Blog writing has taken off in the past few years and is used for various reasons. I'll mention a few of the reasons bloggers blog. Some of them interrelate.
FUN - Some bloggers write purely for fun, using their blog as an online journal. They may base much of their blogging around a particular theme, as my daughter does with her fabric art at Meandering Threads.
PROFIT - Bloggers write for pay, some for blogging networks, as I do for b5media, others for companies that need someone to maintain their blogs that provide information for customers.
If you'd like to see what it's like to blog for a network, check out my blogs at b5media (Alzheimer's Notes, Quilting and Patchwork, and Home Biz Notes).
PROMOTION - Authors are using blogs to promote their books and workshops; crafters promote their products on their web sites; businesses call attention to themselves and their products/services. You might not have a "store" on your blog, but you provide interesting information that will lead customers to your online and offline places of business.
A CAUSE - Bloggers write about topics that fire them up whether political, environmental, health, business, religious, as well as presumed and real slights and injuries. The blogosphere has become a powerful tool for people to voice their opinions and get their views across. Sometimes the power is used negatively, as well as positively.
I enjoy blogging, whether my personal blogs here at Blogger or those at b5media, so much that I teach workshops and give talks about Blog Writing so others can learn about this, too.
(c)2008 Mary Emma Allen