How do social fan reseller business work?

Hi.
I'm just curious, how do all websites selling twitter followers, fans on facebook, youtube views etc do? I mean what technique do they use? Are there some kind of scripts or do they maybe have etablished companies or whatever and redirecting users or how do they do it?

Thanks

 

i know few method

1. using fake account, just play software that register / create account, and make macros to like / follow on every fake account (i know some seller that have +5k fake acc)
2. using "clickjacking" method, put that script on a page / site, so when visitor click everywhere on that page, it is auto click like / follow

for number 1, it is useless to buy from that seller,
but for number 2, it is good, as real visitor that click to be fans (even it is hijacked)

 

If you want to do Social Fans Reseller Business,have a look at http://forums.digitalpoint.com/showthread.php?t=2429639