Establishing brand "you" is a good idea. In the professional business world it comes down to building, maintaining, and marketing your professional reputation. It is not a new revolutionary concept, but could not be ignored in the growing online social networking. There are new opportunities and challenges to establish "your brand."
The best offence is to practice, practice, and practice! Give yourself, and you will make yourself stronger. No one can stop you from giving as much as you wish.