Had the website started asking me for all manner of personal information just to download the file odds are good I wouldn't have downloaded it.
"Enter your email address to receive your private access-code via email"
isn't that hard to fill out. Even not for an impatient Poser user hunting for free crap ;)
And if it is, he will be send back to ShareCG while clicking the next download link. Over and over again. Because in a perfect world all free content is hosted by ShareCG :)