I help with a blog that is hosted at pair.com in a subfolder of a larger web site. Now that Blogger's not going to allow ftp posting, our solution for non-techie posting is gone. I'm looking at using wordpress, but we can't install wordpress.org on her basic pair account, because there's no database. I'd like to set up a wordpress.com blog that points at her domain like this: domainname.net/blog, because as far as I can tell, I don't have the rights to set up a proper subdomain, either.
Changing the DNS settings for domainname.net isn't an option, there's a full web site there, already.