send chain letter texts.  Usually of a good nature except for the "Doom and Gloom) if you don't continue sending the message to other people.  Forst one I thought it was a quirk, but they kept sending those types of messages, then over and over again with the same message.  Running my memory to the limits and loosing my important texts that I haven't saved yet.  about 30 texts in a row, back to back.