56.2% of Software Developers use Open Source
cfelde writes " 56.2% of software developers use open source components by ZDNet's ZDNet -- Evans Data has found a rising trend toward including open source modules in software development world. While 38.1% said they used OSS modules in their applications in Spring of 2001, in the most recent survey, 56.2% said they had."
There is the copyleft license by GNU.
Its the best for the less extreme of the FSF. Basically the main project or code remains GPL. However, you can link and include the code in your project without worry as long as you do not over moddify the code you are linking too.
Most projects on sourceforge just use the GPL without thinking due to ignorance. This causes problems for corporate developers.
http://saveie6.com/