One of the topics I have followed closely since the beginning of Web Publishing blog is for profit copyright enforcement.
Lawyers have been using copyright law enforcement for profit for years whether it was Getty Images which has been going after web site owners for years, or Perfect 10 which purchased licenses from photographers for, in my opinion, the sole purpose of suing Google.
Wired Magazine now reports a company from Nevada, RightHaven, is now going after web publishers for republishing newspaper articles on their sites. Similar to Perfect 10′s approach, RightHaven purchases rights to old newspaper articles from newspapers and then takes matters in to their own hands.
Outside of the business context I think this has a chilling effect as most newspapers alter, move, or remove articles from the web over time. For a small website owner when faced with spending a few thousand dollars to make something go away or tens of thousands of dollars in legal fees there is only one easy way out.