There's been a lot of talk about verification recently, with Twitter making their process more widely available, and Jason calling for Twitter to verify everyone. However it's not exactly clear what is meant by verification, and how it has been done.
Now, we already have the rel="me" standard for linking between different sites to show that you own them both. Its been around for 13 years, and is widely adopted. How about we make it into a badge?
Then, I put it into a Chrome browser extension, so as you go around the web, it will show you if the rel="me" links you see are actually bidirectional, giving a green tick badge like this if they are and a red cross badge like this if they aren't.
Now as I browse the web, I can see if people's links are mutual - it has helped me fix the links on my own sites already.
Try it out, see what you think.