I changed it so that the 60 users with the most points are selected (minimum 20 points), and then 30 of these are randomly chosen to be displayed. The random sort is now weighted according to points, though, so people with more points are more likely to appear in the list and to appear higher in the list. Otherwise there'd be a good chance that the list would be filled mostly with people who aren't so widely trusted. 20 points isn't really that many.