if you get ban :D if u have fight with most of people of particular forum and u still wana post :D \ etc
What is you believe that one nick doesn't justify your personality traits completely, what if you are very funny but very serious at the same time, what if you believe that you can write better in all the forums and can't keep the same writing style because of forum needs, what if you want to be read and read in a way people want to read...what if, you are multi interest person....
can you have multinick, why it considered to be just for a bad cause?