This site now has preliminary support for SQRL login
I’ve tested login, and linking to existing accounts, but I don’t know if registration works with new accounts yet, because I only have one SQRL identity 😉
Anyway, the login option is to the right, under Blogroll.
Update: registration doesn’t work because it conflicts with my anti-spambot measures, but you can link a SQRL login to your existing account as stated.
(Not that many people want to register anyway, but it’s something I’ve been wanting to add for a while) 😉