Hahaha. I do it when I don't miss the time. Usually I'm too distracted to remember it, but there are two chances throughout the entire day to catch it. I don't know if it's just luck or funny coincidence but lots of times that I wish at 11:11, my wishes come true. I don't ever wish for big things but I find that usually what I wish for happens.
Hmm. Ironic, isn't it?