LusciousDelight
You've obviously got your own domain so it won't cost you anything to download Wordpress and set up a blog/s to see how it suits you.
Thumblogger is certainly very worthwhile if you want to go the free hosting route, and you'll learn a lot along the way.
I've done both, and can recommend both ways of blogging although in my experience you've got to go the volume route to make any real money. I've now bought Blogs Organiser which is a fantastic way of making and controlling a large number of Blogs.
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