That is correct, there is no such thing as unlimited hard disk space. Hard drives are physical entities, and as such cannot be infinite, at least not on planet Earth
There are a couple of details that were not mentioned here. This forum would not be visible to users that have less than a certain number of posts. This number is yet to be discussed. Also, all files will be hosted on free servers such as megaupload, while the resumable high speed downloads from the abandonia server will be reserved for VIP users, as it was the case until now. I hope that answers the uncertainties so far.