Headline: There are very good reasons for not using all caps. Do use mixed case 
Details:
Routinely in the computer world I see places where all caps are used. Many times in databases thanks to databases like ORACLE – why even their name and logo are all caps so no surprise that all their database columns are too.
In the book “Mastering the Dynamics of Innovation” there is a section that talks about early typewriters. The first typewrites had only upper case letters. If memory serves me right (I don’t have the book in front of me) Mark Twain had some commentary about how unpleasant that was to read. And almost a century later, the first word processor on the Apple computer also only had upper case (some of you may remember dot matrix printers.)
DO use mixed case (I use all caps on that following the Framework Design Guidelines approach.)
Here is also a good link to the infamous (because it’s only partly true) “Cmabridge Study” – http://www.mrc-cbu.cam.ac.uk/people/matt-davis/cmabridge/
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