I personally tend to think this is subconscious.. seeing a group of numbers once and then again might seem odd, but that feeling of oddness snow has it stuck in your subconscious so you'll be more likely to notice THAT set of numbers than any other countless set you might run into that day.. This sort of phenomena happened a lot following 9/11 for example.
I am of the belief that there's no actual significance.. I tend to think these are purely psychological in nature... our brains are good at noticing patterns.. this is why we can see things in random noise.. ( cloud shapes.. etc )
edit on 9/25/2012 by miniatus because: (no reason given)