The official Tumblr Day is March 3rd 2013.
1)You must reblog this post so that everyone on tumblr sees this. Just reblog it’s not that hard.
2) Make a tumblr t-shirt, a blue shirt with a big white T on the front and your URL on the back.
3) On march 3rd wear your shirt and go out into the world (Scary I know) and meet your fellow Tumblrians!
So yeah do it.
FYI this wasn’t my idea, I’m just doing my part :)