onfocus

1. Mastodon users verify themselves by adding a custom link to their personal site.
2. StreetPass lets you know when you've found one of these links, and adds them to your StreetPass list.

I've been using this browser plug-in for a while now and so far it has detected 16 Mastodon accounts. Today it let me know that Slashdot has an official Mastodon account. Who knew? Anyway, StreetPass is RIYLM.