Let's take a look at the stats.
http://forums.xenobot.net/misc.php?do=botstats
5.95 x 1000 Daily Users = $5950 Per month = $71400 per year - Paypal fees ??? - Server Costs ???
Of coarse this math is on the low side, I'm sure he makes more.
Even if he was spending half of that on server costs and other shit, 35k a year is pretty good for simply spending a few hours updating the bot every now and then. We have not had any new features added in quite some time. All he does is fire up a few programs and special tools so that he can update the bot quickly. 5-10 hours a week for 35k-60k a year income? Where does that equal a dollar an hour?