Links
[1] https://www.dmlp.org/threats/karl-v-feinstein
[2] http://www.firegeorgekarl.com/
[3] http://www.firegeorgekarl.com/2008/03/george-karls-attorney-responds-to.html
[4] https://www.dmlp.org/blog/2008/lawyer-preemptively-threatens-sports-blogger-lawsuit
[5] http://blogs.wsj.com/law/2008/03/04/frustrated-fan-faces-first-amendment-flap/