It is kind of you to notice and to ask.
I had not been very active here in the last four years or so and wore the moderator's diamond as a reminder of the past rather than as a tool to help the site. Moreover, I have enough reputation that when, on occasion, I have an opportunity to spend some time here, I can still do most of the things I used to. It was time to give up the diamond.
I hoped to set an example with my answers by showing there is more to GIS than programming (although that's obviously important): understanding the shape of the earth, what parts of it we can measure and model, and how we think about and analyze them are key to unlocking the power of GIS. If a few of those posts inspire people like you to contribute your ideas and help others, I will feel pleased and rewarded.
BTW, I am still involved in GIS through my connections with Directionsmag.com (which I edited for a year--it's a long story). If you're not familiar with that site, please check it out and feel free to let me know what you think.