When you Google "Alison Doyle" you'll find her About.com bio, personal website, Amazon author bio and Facebook, LinkedIn, Twitter and Google+ pages. That's because she has spent a lot of time building her personal brand. Her goal was to increase her visibility so that anyone who was interested in learning more about her and her work could readily find information.
Job seekers are increasing doing the same in order to get found by employers.
Check out Alison Doyles' article on increasing your visiblity online so that you too can be found by employers.
