Jeremy Kieth has an extended post at https://adactio.com/articles/1533 that describes some of the functionality of how Huffduffer pulls in all the information. Wanting to take advantage of the functionality, I'd also long ago linked my account to my website, which, as part of the IndieWeb movement, has an hcard with the relevant rel="me" links (including one for last.fm.)

Unfortunately I'm guessing that the Huffduffer site only scrapes the data once upon registration and isn't set up to go back and rescrape the data when the website field is updated. To test things out, I created a new account, and counter-tested it against both my current site (www.boffosocko.com) as well as a self-hosted version of the IndieWeb compatible WithKnown and a free WithKnown account. None of these seems to find any user avatar, nor does it suck in any of the alternate accounts under the "elsewhere" section.

I'm a bit befuddled as to what may be going on here as it would seem that recent Huffduffer user Erinjo (https://huffduffer.com/erinjo) who I know to be an IndieWeb ninja has a fully fleshed out "profile" (avatar and elsewhere sections). What are the rest of us doing wrong?