[joesmo]

Very well thought out. Yes, recommending one type of license for all open source projects is naive. Frameworks and libraries need a different type of license than 'application' type projects. If it's not a MIT/BSD or something similarly permissive, these types of projects will generally not get used as much. I need to be able to modify these things at will, without ever having to think about licenses, especially in the case of bugs or problems that I cannot wait for the community to solve (if they're even going in the direction I am). If I'm going to distribute copies of my app, the license choice becomes one of the definitive criteria points in my choice of framework or library. For 'apps,' it's a much less critical choice and it makes sense to have a license that encourages collaboration.

[ArneBab]

why do you need anyone to agree with your changes with a copyleft library?

[joesmo]

I don't, but I also don't want to release all the code for my app upon distribution simply because it employs a copyleft library.

EDIT: copyleft library that I've modified.