I tried a few of these in the past when I was thinking of having a couple of simple blogs up simply for the sake of promoting my main ones. As you can guess however, they were mostly disappointing and that didn't last. My best experience was probably with 247Zilla, where I had no issue over the first few months. Then things started going wrong, and the blogs would often stay down for hours. I eventually dropped them and let the domains expire. There are also other options like Blogger or Wordpress.com, but they just don't feel the same as a true website host.