The OBA blog has been quiet for a little while. We're taking an opportunity to expand the OBA team, and with that change new people are being brought into the OBA program to expand our efforts here. I'll be working with various folks to keep the blog posts rolling, and to keep providing information in the future. You can also find me here: http://blogs.technet.com/gray_knowlton, I've been working Open XML for nearly 4 years now.
We're still driving http://www.microsoft.com/office/oba, and we're still working with partner OBA solutions that you can find at http://www.obacentral.com.
OBA is alive and well!
Gray Knowlton,Group Product Manager, Microsoft Office