Unless the Zuckerberg took his code or design this is false claim.We used to have a network for exchanging books in the university in 2001, it didnt go viral nor stolen by facebook.
Seeing good idea and making a great global product out of it is more then being the founder.
You allways care about competion, scale and market advantage or risk being copied .
I am not sure what was stolen exactly. If no source code was stolen, no users, no trademark, no trade secret. Only some ideas that were copied. Seems like Zuckerberg was inspired by this guy's site but grew facebook more shrewdly and without much attention to privacy issues.
Well, the name at first. And then look at the claims of his lawsuite against the book and subsequent movie, false statements and omissions.