Well I have used Word Press before, and Yahoo does support it so it is an option. However, I am picky, I want the blog to match the theme of the site as closely as possible. I spent a three full days customizing the forums to get them to match the site, you should check it out I've come along way since rats collectibles and GJ.
Bottom line, I want a blog that theme is easy to customize to match the look of the site as well as implement the right ads. I know there are widgets for amazon ads and google but none of the themes I have support widgets and I hate looking for themes.
If you check out the link in my sig, to the myspace you can see how closely I got the Myspace blog to match my site's look, that is what I want. If I knew how to modify the css or php I would do that. html is not so bad, I can usually find what I am looking for, but with php especially the wording is just technical sometimes. This will be the fourth blog I have tried to install, if I end up using Word Press I want it to look right, otherwise I will be forced to stick with Myspace for a while. The only draw back to Myspace, and blogger/ Yahoo 360 for that matter, is the inability of implementing my own ads. Also myspace is garbage anyways.