API is on the shortlist. It's a Rails 3 app, so json/XML feeds of views are trivial.
And hey, if Yahoo wanted to buy it, I'd be more than willing to let them kill it for the right price. At which point I could write another. :P
I do some minor profile import from Twitter right now (just your name, if available), but the data's cached locally if I add profile fields in the future.
The settings page is busted because of a fix I just made - Devise doesn't seem to like delegated auth accounts without a password. I'll see what I can do to fix it up.
Signed in using Twitter OAuth, imported my Delicious backup, completely painless.
Now if you release an API and people make awesome Chrome/Firefox extensions, you're on your way to sell this beauty to Yahoo! :P
Edit: Looks like the Settings page is a bit broken, but I'm sure it'll be fixed soon. Bonus points if you import my profile data from Twitter. :)