"It seems we've arrived upon Microsoft open source. In the last
couple of years, whenever there was discussion of Microsoft's open
source projects and efforts such as CodePlex or Port25, there was
typically the standard open source response: it's not OSI-approved;
it's not real open source. Now, with OSI approval of two Microsoft
licenses, the proprietary software giant can legitimately say these
projects and programs are open source.
"It will be interesting to see whether Microsoft blurs the
distinction of its now OSI-approved licenses, the Microsoft Public
License (Ms-PL) and Microsoft Reciprocal License (Ms-RL), and other
licenses used in CodePlex, SourceForge or other projects..."