I like feeds for blogs because you can, in one place, view all the blogs you read, and immediately see what has been updated. If you want to know more about feeds or get a feed for your blog, either check with your blog provider or go to feedburner.
Feeds can be delivered by email, into a reader, or onto a homepage. Either way, it makes keeping up with the blogs you read easier. It also makes it easier for your reader to keep up with yours.