Apple: "Don't send us your ideas"

Many big companies have these policies:

http://www.microsoft.com/en-us/legal/intellectualproperty/co... http://pages.ebay.com/help/policies/unsolicited-ideas.html http://company.zynga.com/legal/unsolicited-ideas http://www.logitech.com/en-us/utilities/forms/790

"We'll just patent your own app's user interface, thanks!"