Why do you think that? Do you think that Twitter is better than Facebook generally, or just more useful for the purposes of your business?
This thread doesn't seem to be going anywhere, as the replies posted are mostly pretty vague. To anybody who wants to contribute, please make sure any reply from now on gives some detail as to why you think one is better than the other. What experience is your view based on? Or have you read an interesting and informative article? Without more useful replies, this thread is liable to be closed.