Blogging...is it useful?

I am new to blogging and for that matter, if I'm honest, I'm technology challenged. Keeping that in mind, I have come to the conclusion that blogging is a useful tool. I like the fact that you can post statements about a topic and actually get comments from others on how they feel about the subject. I also like the idea that people around the world can read and respond to my blog. If you think about it, that's pretty cool. Since I don't have a classroom I plan on using a blog with my cheerleading team. I am always coming up with ideas in the middle of the night and if I put them on the blog the girls could respond to them through out the day before practice begins. I'm sure that will push them over the edge because they already think I am obsessed with cheerleading!