We're still so early!
Every time I use something cool and "for free" i look for the tip jar in BTC. This is the forum for the torrent client in Ubuntu by default and people have been begging them to accept donations in BTC since 2012! I can't even imagine what they could've funded if they hodled a little. I was going to contact them to ask for a donation link in BTC, but is it worthy? They're still using PayPal ffs.
It reminds me of a talk from Antonopoulos where he says that his first reaction to BTC was "hah! Nerd money" . But the guys writing code for the Torrent client distributed in Linux are the very definition of nerds, that is, the nerd community are not even using it. Why?