What is effective comunication?

Efective comunication in my opinion is when two or more people can have a conversation with an open mind for the others opinions and at the same time each one of them have to be a good listener. Also it will be good to have respect to each others' beliefs or comments as long as nobody cross personal boundaries. Main point the components are Listening and Commitment and what I call "grey area". We might not agree but we can get to one if we are considerated with others feelings.