Just as cognates are words which appear similar, but have different meanings, so, too, there are Twitter cognates.
Your Twitter Twin is another person bearing your name, but with (obvioisly) a different face. Like cognates, you sound the same, but look different.
Your mission, should you choose to accept it, is to search Twitter for your name, find an account with photos, and RT one with the following:
“I found my #TwitterTwin. Who’s yours?”
Let’s make this fun, people. 🙂