MIT. It's a nice, small, clear license, and I think slightly clearer than BSD. I hesitate to use GPL (unless I have to) because I like commercial entities to u

MIT. It's a nice, small, clear license, and I think slightly clearer than BSD. I hesitate to use GPL (unless I have to) because I like commercial entities to use my work as well, and in all the years of me using MIT, code sharing and patches from third parties keep coming in regardless of whether they have to or not.