have you thought about a file exange database for arduino sketches?
There anybody could upload a file, so that others can find, download, rank, comment, dicuss and correct bugs.
An good example of what I mean is the Matlab central:
the playground is great, but it could be better. For example:
When is search for a timer code there are many different and there is no rating to help me chonsing one.
When I find a bug or a improvment, where should I post it? In the Forum?
Newbies certaily whoun't have the courage of posting their scraches as it looks "official".
Using abreviations like "AVR" confuses newbies.
So the playground may be great for experienced arduino users. But for newbies it is quite hard to use.
Take a look at the matlab file exange. It is increadible how easy you find the script you need.
I belive that an easy file exange would increadibly increase the the ammount of scrips beein posted and making it easyer to build your arduino project.