Paul has recently written two very interesting blogs about open source and open standards: Why open standards and interoperability are subtly different and Open Source versus Open Standards.
A related thing is the "Open Source Requirement for Open Source", which I was part of pushing to finalize when I was on the OSI Board. Unfortunately that never got finished and I haven't had the time & energy to try to get convergence and finalize it. However, I still strongly believe those requirements and push for them in whatever standards activities I'm involved in. Interestingly, I believe this fits nicely with Paul's thoughts.