Ask HN: How many users does your webapp need to be worth something?
For a free to use site with advertisements(as the revenue model), roughly how many users would make this site worth anything?
I think you could make an app with 50 users that is more valuable than Facebook, if I'm allowed to pick whom the 50 users are and what they do. (Military officers with purchasing authority who use the app to make trusted strategic forecasting decisions. BAM.)
Value = Number of Active Users X the Depth of their Pockets
Try chatting up some middle class housewives. I may be totally off my rocker here, but I'm thinking borrowing items of significance is vastly, vastly more common among twenty-somethings in communal living situations than it is among people who own property.