I'm 34, in Knoxville Tennessee, and I do GIS and mapping work. Thanks to some 9/11-generated 'free time' in the form of unemployment, I built up my skills as a photographer and Photoshop user. And years ago I decided that Apollo would provide a research hobby that spanned many fields and would never run out of fun things to learn more about.
It finally occurred to me that 3D is of interest to everyone in GIS and photography, and that the red-blue technique works great in both fields when done properly. I realized I had only done it properly with aerial imagery in GIS without thinking about what made that work so well, and when I did think about it, I learned what to do in my own Photoshop work. Most importantly, when things are done right and the image is in proper register, gray will still look gray and colors will appear as natural as they can...so a good 3D anaglyph shouldn't frighten anyone away!
[The following responds to a question from the ALSJ editor, a fan - and near contemporary - of another Eric Nelson.]
Oh yeah, I know Ricky Nelson's music...sort of wondered why nobody ever gave me that nickname; must have been my parents' exclusion from anything newer than 1960. Wish I could make music as good as his - or any music at all, really...