***UPDATE: Due to weather-related flight cancelations and rebooking, we had to push this back to Thursday, January 23, at noon PST/3pm EST/20:00 GMT***
James Shubin is known in the Gluster community for his work on the Puppet-Gluster module.
Recently, he’s begun to create powerful cocktails of Puppet and Vagrant to create recipes for automated Gluster deployments. See, eg.
Building Base Images for Vagrant with a Makefile
and
Testing GlusterFS During GlusterFest
This will be quite a fun spotlight, and very much worth your while. As usual, join the #gluster-meeting channel on the Freenode IRC network to participate in the live Q&A.
About Gluster Spotlight
Gluster Spotlight is a weekly Q&A show featuring the most exciting movers and shakers in the Gluster Community. If you don’t catch them live, you can always watch the recordings later.
JohnMark.Org 
Wow. That is so elegant and logical and clearly explained. Keep it up! I follow up your blog for future post.