That clause was not added to prevent hacking by any means.
That clause was added to prevent what occured with the freeware where people would give away half the registered version and call it a "hack". This clause now gives us better ability to control this and more leeway if we need to stop someone from doing the same thing again. It is your investment in time and money that we are protecting as well as our intellectual property.
In the future it will allow us to work more closely with and to support legitimate sites such as UBBDev, for example, and prevent other less legitimate sites from giving away your hard work.
I can tell you that before I was an Infopop employee and still an avid code hacker nothing upset me more then seeing my hack end up on somone else's site without my knowledge, even with my name on it. Except the two times my work appeared on another site with someone else's name credited, that definately upset me more.
[ February 03, 2001: Message edited by: navaho ]