[pbhjpbhj]

Not sure if you're being sarcastic, but ... Facebook seem to classify posts as important if they get more than the usual number of peers attention, so you get major life changing announcements (births, deaths, marriages). I don't know if they solely use votes, or if they weight that with word analysis, or do something clever like matching you with other friends who upvote similar things and so boosting the chance you see posts if they upvote them (I imagine they do but perhaps use simple metrics for 'life event' indications).