Ahm, how many threads about this do we have now?
But nevermind. If you wanna setup a network of blogs, mostly auto updated and acting like a TGP, I'd recommend you to use some free service like Thumblogger (see post above)!
If you want to open up a serious blog that has some personality and that you update often... I'd definitely say WordPress on your own hosting. You can get it at
wordpress.org and it's free. Some hosts also offer WordPress as an easy one-click-install aswell. I'd recommend
DreamHost for that, cause they are cheap and have a cool control panel. Don't expect 100% uptime and a 24/7 instant response customer service for that price though!