I've just traded work-related (job #2) emails with a guy from Uganda, and I couldn't but notice that he uses SEEMINGLY random CAPS not following any underlying pattern I can see. I'm feeling somewhat guilty for not mocking him (it's damn condescending on my part, really, being understanding of something I'd probably mock in a work-related email from, say, the U.S. ), but I'm also curious. Are the caps reproducing some speech pattern? Might there be similar written markers in his mother tongue correlated in some form with syntax or semantics? Is it a conscious use of the CAPS=raised voice online convention, or is it overloaded for something else?
I don't know, and I lack the proper sources to find out, but if any of you has any ideas or links, I'd be grateful.