Am I blind, or has the API documentation completely disappeared?

I've also noticed that some of the RSS feeds I had previously subscribed to are starting to 404. I haven't had the patience to track down what the new URLs are, but no redirects? Really?

Email addresses with plus signs in the left-hand side now appear to be a new pain point. :P (My existing plussed-address is still in place, but any changes I make to my settings cause a server-side insistance that the email I've entered is invalid.)

So far, not impressed with the first steps Avos have taken, and I say this as a long-time fan of Delicious.