Back in 2004, when Ubuntu came out, I bought Ubuntu.it (and later Kubuntu.it) to host my blog, which was about Linux and Ubuntu. The blog was in Italian, hence my interest for the .it TLD.
I used them for a couple of years or so, then was approached by some of the Italian Ubuntu community members, as they wanted to be able to use the domain.
I decided to donate both domains to Ubuntu, with a simple condition: at the bottom of the page I wanted a small phrase which would say "kindly donated by Ubuntista". The phrase stayed there for a few months, then disappeared. I decided not to complain, even though I still don't like the fact that they didn't stick to their promise.
p.s. I like Ubuntu, I met and am a fan of Mark Shuttleworth, and I advocated Ubuntu for several years, even when I was at AWS.