So you believe that the text that people will attach to a "meme photo" will be interesting, insightful, non-repetitive text? Your own example was "use strict" and "RTFM", which are already annoying, boring boiler-plate too much right now.
The text will be slogans. It has to be. You can't even fit a decent Twitter blurb on a meme image.
Even if I try to imagine non-repetitive text that would be short enough, I find it hard to imagine somebody using a meme image to say "Add a ; to line 6". But then, I also find it hard to imagine how doing so does anything but make that text more annoying. :)
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