These are great professional sources that can be used to market yourself. They are easily accessed and all potential employers can view them. They can see the information that you want them to see. These sites can be more professional and less personal, making them better to use for business purposes. These sites can be used for networking. You can stay in contact with people in the same filed you are trying to go in to or already in. People are already going to look up information about your, so with these sites, you will already have something in place that potential employers, employee or clients can view. The down side to these sites are you may have to learn how to use computer skills if you have not done so in a while. Or if you never have used a computer. You may have to learn little skills like embedding information if you have never done that before. The other that may be an issue is the time it will take to get these sites set up the way you want.