O
Octopus
As @Dillb said in his original post, with the 'disagree' and 'dumb' there is no constructive feedback. Also some people get wound up by them..... Not me, I'm surprise I don't have thousands of 'disagree' and 'dumb'.... I think it's down to my wonderful personality, stunning looks and charisma.....
I've handed out the disagree and then posted why ........... not sure many others do this
Dumb ............ well that normally doesn't need any explanation