When someone reveals information about someone to their face that could only have been garnered via intensely following their activities on social networking sites. Nearly always potentially embarrassing for both parties.
The sensation of awkwardness that ensues upon running into an individual several times in the course of the day, without intending to, leading to the conclusion by the other party that you are stalking them.
1. "I hadn't seen Amy in weeks, and today I ran into her six times! It was stalkward, man!"
2. "So, I'd never met this guy before, but I've seen him like five times today, it's really stalkward!"