It is not a rank. A rank would imply a positon on a scale consisting of all the entire population of IndiBlogger members. So, for example, <an_awesome_blog.com> is the # 51st of all the blogs on Indiblogger.
What IndiRank seems to be is a Score, which is why my score is the same as a whole host of others. It does not tell the position (rank) amongst bloggers. It does not seem to be a percentile either. I don't think my IndiRank of 77 means I am in the 23rd percentile, where 77% of the population is ranked below my rank.
So what exactly is IndiRank? What does it really tell us about the blogger? If it is based on MozRank, Alexa, juice passing etc, then I cannot explain how the IndiRank went up since last month. (The month before was passed off as a change in algorithms - also did not make sense given the scores on each criteria. The only explanation was a penalty imposed for improving your Alex rank)
MozRank is the same, Alexa is better (why no penalty this month - see above?) , Juicepassing is worse, frequency of posting is the same. I don't understand the "Updated" stat at all. Is this about adding pages, modifying the site, etc or just new posts? New posts is taken care of by Frequency of Posting. Most bloggers are not going to change the site itself everymonth. So what is this 'Update" score?