Dave Winer talks a little about titles, and why some posts of his don't have titles. I love the way Dave's software works, and sometimes wish for similar software. Their are times when I have posts that I don't want to give titles to. However, one of my friends subscribes to my feed via livebookmarks in firefox. And I found that if a post doesn't have a title, its ignored. So titles are important for me, and I wish it wasn't so.
I haven't heard Dave talk about the OPML editor recently. I wonder how active the development for it is. If I could get it to post a blog to my server, I'd definitely use the software. I'll have to try it again soon.