I didn't even realise there was a viewing counter.. Although i rarely post castings so thats why I've never noticed.
I don't think it really makes any difference if a casting has more views than another, so it would be a pretty big waste of time sitting hitting refresh. I may be wrong though, if the castings with more views get somehow prioritised then I agree with you however i don't think its done like that.
I can marginally understand the thing with followers because you know more people are aware of your work/who you are. Its not really the same as how many views one has on a casting call, when people post them surely the most important factor is wether you get what you have cast for.
The ones I notice with the most views seem to be the more "comedy" type castings - "Looking for model who has large anus and is happy to stick a guitar pedal inside it, this will be my first shoot as such its an experiment and will be shot on tf" would probably get more views than an "ivory flame" casting because people will be sniggering and sending the casting link to their mates to laugh over. That doesn't necessarily mean that person is better or that they will get anybody to agree to their shoot.
I'm quite glad that there isn't a page view function on purestorm, I can just imagine all the posts we would have cluttering up the page of people congratulating each other everytime they get 1000 views.