Interesting... kind of disproves my "Reverse Psychology Theory", where I've speculated that the best way to get an article kept is to be really obnoxious about wanting it deleted, and vice versa.
That works too. You nominate an article for deletion half a dozen times for stupid reasons, it gets kept each time, then when someone comes along and nominates it for a good reason people just see the long list of deletion debates on the talk page and say "Keep per last time" without bothering to read what last time was, and the article ends up being kept forever.