change the way referrals work, instead of paying it instantly pay it in bulk
whilst its nice getting points just for telling people about the site getting 1 point here or 5 points there really isnt very helpful or useful
so change it to either weekly or monthly that way for someone like me with alot of referrals instead of getting maybe 5-10 points in drips n drabs id get maybe 100 points in one go which is much more useful