7 is a significant number in most systems of numerology. That's nice. The next bit numerologists' mumbo jumbo (keep in mind, this is me talking) that comes to pass where it can be shown that there was no conscious intent nor subconscious impulse to capitalize on it will be the first.

I believe in fate, and in luck. But the 7-7-07 thing is just a quirk of a social construct that was created to make book keeping regular.