Well, not sure how practical this is, but the past couple of days I've challenged myself to post one bitt in each of the categories (minus the spanish ones since I can't speak it). Its not easy on a Sunday, but I managed it for the most part. Perhaps Infobitt could challenge people to do that, and then provide bonus points to those who can do that. Perhaps with the provision that any one bitt posted has to have at least two facts supporting the primary bitt to qualify. Not sure if thats something that answers your question.
Another idea i just had, perhaps one of the stats that are tracked could be the number of views any given bitt (and the facts within it) has might be an interesting feature for the future.
Cheers.