Thanks for this explanation. I guess I'll stick with emphasizing zaprank, but maybe as more of us synthesize a little bias might not be so bad. One of my goals is to shine light on good content that was missed or ignored by most stackers. There can be many reasons for this. I can't prove it, but it seems that it depends when you post, for instance, both as to day of the week and time of day. I think that because so many stackers are from the US, posts made during business hours in North America do better. I would like to check this out empirically.