OpenStax (openstax.org) is a wonderful initiative to provide quality free textbooks to world.
They have excellent homework problems and worked out solutions for many math and science classes.
It seems this would be an excellent source of Webwork problems for teachers.
Has anyone discussed porting to Webwork? It may be an excellent way to get lots of nice PGML problems into the standard library.
I'm very interested and willing to help if anyone else is also in doing this.