A while back, Mark Wagner from PubSub pointed me to their top 1000 linkRanked sites and asked for some comments. I haven't yet got round to doing anything interesting with this stuff, but can at least show the following graph which displays the Average linkRank for 30 days (x axis) versus 15 days (y axis). It suggests, not surprisingly, that the higher you are ranked, the less likely you are to change rank - or the more stable the rank is. I can probably do something far more interesting on measuring these changes, but that will have to wait.
Note that those values below the line represent sites whose rank has decreased (i.e. have gone up in ranking - very confusing I know) when taking the 15 day average rather than the 30 day average, where as those above represent those which have increased (i.e. fallen in rank). I've added some labels as landmarks - gnuplot is not that good at labelling, but they are positioned so the left most extreme of the label is at the point being labeled. For example, littlegreenfootballs.com is above the line whereas techcrunch.com is below, therefore littegreenfootballs 30 day average is of lower rank than its 15 day average.