I found a strange that when checking some filtered list for celebrities (country) you can see daily values with average between 30 to 150 per day per celebrity but then you see one that gets 1200 one day and the other 4500. Seems that count system is just based on how many clicks you do on any celebrity. So if you click 1000 times on a celebrity you can make it go up very easily.
It will be good an improvement to prevent less known celebrities get to the top just by clicking thousand times on a profile. You can´t vote more than once for a celebrity so should be a way that from the same user or IP it only counts once checking the profile. But maybe it's complicated to code.