Well, Opera Blogs are not capable of emailing me when a new comment is received. Which means they are next to useless in the long term.
So I am hunting for a new blog provider. One that supports the Opera browser. One that provides a calendar navigation tool. One that provides smilies (so no problems here then 
) And, of course, it needs to provide an RSS feed.
It needs to look good, and perform well, and the ability to import from Blogger would be a distinct advantage.