Here's the comment about some downweighting for lightweight sites. <a href="http://news.ycombinator.com/item?id=294439" rel="nofollow">http://news.ycombinator.com/item?id=294439</a> Here's one confirming the downweighting of self posts, though without saying the modifier. I remember the modifier as being 0.7, for what it's worth. <a href="http://news.ycombinator.com/item?id=304058" rel="nofollow">http://news.ycombinator.com/item?id=304058</a>