Exactly, photographer goes around the club and takes pictures of girls he finds better looking, also sometimes of local rich guys (sons of local "businessmen").
You can spot this if you frequent some particular place and see that they have wall where they hang pictures from friday/saturday night and all people from this wall are pretty much "hot". But over the weeks of going out to that particular place you realize that you see hot girls every time but in not large numbers like the wall with pictures suggest.
Then when they post these pictures on their facebook official page, they will attract horde of thirsty guys.
You can spot this if you frequent some particular place and see that they have wall where they hang pictures from friday/saturday night and all people from this wall are pretty much "hot". But over the weeks of going out to that particular place you realize that you see hot girls every time but in not large numbers like the wall with pictures suggest.
Then when they post these pictures on their facebook official page, they will attract horde of thirsty guys.