As a thesis student, I can't buy all materials I come accross with coz I'd go broke. Hence I encounter plenty of materials with rar passwords, who have thi answer this survey to get password and I'm like, yeah I'd answer give me the password. Hundreds of surveys later, there's no password. :( Can somebody help me with this? How to get password or is this some sort of scam?

one of the sites are: http://uploadsnack.com/x23gri