https://github.com/settings/billing says otherwise, mate. I assume the sarcasm was to the fact that you can't make money without ads, as opposed to being sarcastic about having no paid accounts.
Re:Don't tell me how to enable JavaScript
by Pewpewarrows on Friday April 13, 2012 @10:49AM
(#3836970)
Sorry if the sarcasm was lost on you. GitHub very obviously has paid accounts and makes money without ads.
/s