I came across a neat browser extension today. It looks for "rel=me" links pointing to mastodon profiles, and puts it in a little list for you to review.

In other words, you visit a website, and if tells you if there are any mastodon accounts associated to the website.

http://streetpass.social

StreetPass for Mastodon

StreetPass: Find your people on Mastodon

@aeva please tell an old duffer where to put rel=me (nice answers please)
@JohnLoader6 you need to go to your mastodon settings (in your browser, not inside an app), then profile, and you’ll see a section titled “verification”.
There you’ll see the code you need to include in your website to link to your mastodon profile, that includes the rel=me attribute. Just put it inside the html link to your mastodon profile.
After doing this, you can include your website url between the 4 links you can show in your mastodon profile, and it’ll get a verified label.