There are some interesting parallels between the idea of free to play and the free demo, pay for the full model like some iPhone apps have. Here's a great post from NimbleBit going over the numbers for their iPhone development -- http://www.nimblebit.com/2009/06/nimblebit-numbers/ Kudos by the way for people who post ...
I really like the whole 'catchiness' concept. What it makes me think of is the idea of 'humability' for songs. A catchy tune is one you can hum or replay in your head though not necessarily the whole tune, but just select passages. Take Beethoven's F r Elise for example. ...
