e.quaintance
A fake friend you only know because they spam you with emails or type nonsense in a video game while you're stuck in traffic.
'Hey, I just got your email. You're cool. Let's be friends.', from a guy who's never seen you in real life.
You log into your RPG and see a message: 'Hey, wanna team up? I’m a wizard.', he’s just a kid with a bad internet connection.
You get a DM: 'Hi, I follow you on blogs. Let’s be friends.', he’s probably your mom’s friend.