He's quoting Coda Hale without doing the math himself. It's fairly trivial to deduce who was sent here from the link that went around on Twitter. I see at least six people that saw the link on Twitter, giggled about it, then decided to show up on HN to make me feel bad. Because me calling it a group is totally wrong when they brigade a thread, right?
Regardless, my point was those Gittip accounts do well versus other Gittip accounts, which by and large represent people who contribute a lot of free software to the community.
459usd/week*52weeks/year = 23k/year - taxes = ~10k
They will be rich soon.