The purpose of Slander and Libel is to have other people see it, not the person being slandered. Therefore the block feature is a counter-productive solution as it only prevents you from seeing what the persecutor(s) are saying about you.

Also, when was the last time that taking a screenshot and reporting to Tynon did ... anything? We've reported everything under the sun including downright criminal activity, sent mails to dave, and are still waiting (months later). If experience is any indication, we'd have better results writing a letter to Mr. President.

For more info, Google Third Party Harassment