I was tracking a few of my own submissions - I think it's random. IF you happen to arrive on the frontpage and stay there for a few minutes, a reasonable amount

I was tracking a few of my own submissions - I think it's random. IF you happen to arrive on the frontpage and stay there for a few minutes, a reasonable amount of people will vote that up. However, if you stay on the front page for too short or not at all, the random fluctuation might kick you down. This is e.g. raspberry pi foundation linking to pypy blog vs submission of the pypy blog itself.