What advice would you give to small businesses that are thinking about creating a twitter account?

to seem as professional as possible, with a little hint of casualness...just enough to make a follower feel secure and comfortable with you companyWhat advice would you give to small businesses that are thinking about creating a twitter account?
1. Seem very personal to your followers/customers and don't simply push your products/services on them.


2. Follow as many people as you can. These people could eventually become your followers/customers


3. Reply to as many of your followers as you can. This will show that you really care about your customers.