A personal website can be beneficial for many reasons. One, all the information a client needs to know is posted on your site. That way when he contacts you there is no discussion regarding your services or money issues.
Two, it helps to create a sense of establishment.
Three, you are able to show case your own personal style, so that you can target the client base you are looking for.
Finally, they can view more images of you then are typically posted on an advertisement. Photos are what tend to sell most men.