I totally forgot about the awesome that is Go Play!  There is even a web site.  To quote the site and it's creator...

What it means

Posted by Mike Sugarbaker on 15 Aug 2006 at 02:24 pm | Tagged as: Advocacy

Some people are already getting it twisted, so here it is:

Play is good. Play is necessary. Play keeps us young. Play keeps us alive. Play leads to new ideas and new ways of looking at the world. Play teaches us about each other and about ourselves. Play makes us human.

This symbol says, “Have play in your life.” It does not say “I am ______ and you are not.” For that matter, it does not say “I am ______ and so are you if you understand this.” No, not even when you fill in the blank with “gamer.”

This symbol is not even really an exhortation. It’s a yelp of joy. It says, go us. Go team. Go humanity. GO PLAY.