Okay, I'm probably preaching to the choir here (or talking to the wall), but I've been wandering around the Internet for the last couple of days and I keep seeing the same words misused again and again so I thought I'd point it out.
Goofing off on the Internet is a pastime, not a passed time.
Someone who has died has passed away, not past away.
"I saw something run past me," not "I saw something run passed me."
"We hung around and passed time," not, "we hung around and past time."