Today is your six year anniversary!
You've been here for five years now.
Today is your four year anniversary on the site!
You've been here for three years, thanks for sticking around!
Put a filter on it.
You associated your account with Twitter. Um, @awesome!
You associated your account with Facebook. Well played.
Today is your two year anniversary here.
This is your one year anniversary. Thanks for hanging around.
You've made your first post! Welcome!