Nintendo has disabled the ability for 3DS owners to send and receive Spotpass notes via Swapnote (or Nintendo Letter Box in other regions) after discovering some users have been using the service to transfer offensive material.
“Nintendo has learned that some consumers, including minors, have been exchanging their friend codes on Internet bulletin boards and then using Swapnote (known as Nintendo Letter Box in other regions) to exchange offensive material,” reads a Nintendo statement on the company’s website. “Nintendo has been investigating ways of preventing this and determined it is best to stop the SpotPass feature of Swapnote because it allows direct exchange of photos and was actively misused.”
via IGN All http://feeds.ign.com/~r/ign/all/~3/oVdVmkcw7E8/nintendo-suspends-swapnote-due-to-offensive-material