So now that I've paid for instapaper for iPhone and iPad, I don't have to give Marco any more money. That means the only way he stays in business as the product grows (being that I am not a revenue source anymore) is by either a) figuring out an additional revenue stream from the data or b) discontinuing the apps I paid for and charging me for new ones. The same goes for sparrow. These one-time purchase apps don't ha…
Instapaper isn't entirely without other revenue. The web interface displays ads, and he offers a $1/month subscription that improves some features. (I pay for it so that I can send larger compilations to my Kindle.) http://www.instapaper.com/subscription
Glad to see that he's happy and feels like he's making enough.