I found this site exposing the Spam-Demons who have invaded Twitter by hacking into people's accounts. It tells how to stop the dastardly cads.
How to Exorcize a Spam-Demon
Temporal Anthropologist with the University of Cambridge since 2610;
Licensed Time Traveler, Certified by the Institute of Time Travel;
Doctorate Degrees in Anthropology and History;
specializing in Victorian England.