Why I am glad Paul Chambers won his high court appeal

In November 2010, after Judge Jacqueline Davies confirmed Paul Chambers' conviction in the 'Twitter joke trial', I wrote this:

Terrorism works by spreading fear among the population, forcing us to live diminished lives. The security precautions we have to undergo at airports and the screen that divides MPs from the public gallery at Westminster are both victories for the terrorists. 

They were handed another one by the confirmation of Paul Chambers' conviction in Doncaster today.

So Chambers' win is a defeat for terrorism.