Using the API, I obtained the previous data...

Most viewed: www.ipernity.com/doc/51803/3220566

Most voted: www.ipernity.com/doc/arty3475/3222731

Most commented: www.ipernity.com/doc/fee/3219675

Highest faves to visits ratio: www.ipernity.com/doc/54993/3223982

EDIT: the doc.search is now limited to 3000 docs, so this kind of stats are no more possible