The Daily Parker uses the mostly-open-source dasBlog engine. The software has always offered two choices for how it creates permanent links (permalinks): titles and GUIDs. As you can see, we use GUIDs, so permalinks look like this: http://www.thedailyparker.com/PermaLink,guid,05976d99-b3cb-4391-9052-509832cbf5cf.aspx instead of like this: http://www.thedailyparker.com/About-This-Blog.
I've been thinking that GUIDs, while always unique, are kind of ugly. This morning I tried changing the blog's configuration settings to use titles instead. Sadly, dasBlog generates permalinks on the fly, but doesn't change permalinks within entries.
Therefore, in order to switch to title-based permalinks, I'd need to root around in all of the individual entries and change them. I could write a script to do this, I suppose, but with 2,715 entries spanning almost six years, it's still an undertaking.
So GUIDs will stay, as they have for the life of the blog. If I ever start another blog, or if I ever want to spend a day making the switch for this one, I'll use titles.