Clay Shirky wrote about this, see eg [1]. The idea is that you need to minimise the number of decisions people have to make, or they won't use the service much.

Clay Shirky wrote about this, see eg [1]. The idea is that you need to minimise the number of decisions people have to make, or they won't use the service much. You don't want to cause "decision friction" on every site and every month again. Kachingle [2] and Sprinklepenny [3] apply pretty much the same rules that are outlined in this video - it seems a point of convergence for this type of service... [1]: http://www.shirky.com/writings/fame_vs_fortune.html http://www.shirky.com/writings/fame_vs_fortune.html [2]: http://kachingle.com/ http://kachingle.com/ [3]: http://sprinklepenny.com/ http://sprinklepenny.com/