[zackify]

This has been a chrome plugin for years already. It's called motivation: https://chrome.google.com/webstore/detail/motivation/ofdgfpc...

Edit: I see it's mentioned when you click about :)

[oleg131]

Yep, that was the motivation =). Although i did write my own function to calculate the number of years, so that i would take into account leap years. Surprisingly, not many solutions exist for that...