difference between online journalism and off line journalism

today online journalism is going on peak because every one wana interact with each other.first difference is online journalism is a two way step of communication u can give feedback on the spot in any thing rather in offline journalism it is a one way communication. u can not share or give feedback to other.the example of off journalism is newspaper,tv etc. u can not give response to other. and in online journalism online media include facebook,twitter and myspce etc.