This ZDNet Article reports Apple may be getting even harder on sites/publications that publish Apple/Mac Rumors:
Apple Computer Inc.'s advertising agency is offering Mac publications a choice: Get out of the rumors business or lose Apple's business.
The agency, TBWA/Chiat/Day, recently contacted several publications that carry Apple's advertising, and informed them of the company's concern about publications that create or circulate rumors about the Mac maker and its products, according to people familiar with the matter.