This is amusingly relevant for me. I had a number of bug reports for my November app Quick Brown Frog (http://quickbrownfrog.com) from people complaining of low speed scores, due to their two-space habit (all my source texts are formatted to use a single space, and they're displayed in fixed-width).

I considered reformatting all the text to use double-spaces, but then figured that I'd get an equal number of complaints from the single-spacers (little-endians?)

In the end I changed the code to ignore the double space if received as input. No complaints after that. :-)