In my opinion and as a counterweight to the restricting three sentence quote, we should have a rule that any and all responses should be of at least five full lines and should have something to do with the theme of the thread.
These constant 'I agree George' and 'good post Fred' are a waste of space, block off a normal continuation of the thread and apart from adding to the number of posts serve no other purpose.
The constantly promoted belief (induced by religions) that we are born to be good and obey (in order to enter heaven) is a tragic error in the concept of the universe's plan and an insult to mankind's intellect.
'A clear conscience is the sure sign of a bad memory'
- Mark Twain.