Referring to this thread: http://forums.digitalpoint.com/showthread.php?t=262524 I think mods should check it out, as this type of activity is stealing and also can lead the owner of a victime forum to very bad situation regarding privacy issues etc.
Theres lots of tools that already exist like that. They are just scrapers. To be honest the guy wont even code it. So much problems that are associated with it. If you want to see other example just google "blog scrapers"
I know those exist, but that doesn't make it legal or ethical to steel content, structure, users etc. from other sites.