Yesterday I talked about you brand. In specific, I talked about your pic.
The picture you are using on twitter, on Facebook, on any web site that have this option to brand yourself and on your promo pages.
But, this is not the only thing that you need to brand yourself. You need to do what you preach. In another word, having a good picture is helping, but you also need to be true. Even with a wonderful picture, you'll still have to be nice and true within all your action.
Peoples aren't gonna trust you if you broke your promises the moment it doesn't fit you anymore. Peoples will quit doing business with you the moment they think you're using them.
Your reputation is pure gold. Don't waste it on a cheap moment of rage.
Be true, you can't fool anyone. Even if people don't have a direct contact with you on the internet, they'll spot your scam a mile away.