Theresa, When you say major career opportunity websites, I assume you are talking about sites like Career Builder. If not, please let me know. Doing your homework on candidates is an important part of the process. You don't want to be surprised once you bring them into your organization. Both formal and informal reference checks needs to be a part of the process, as well. By that I mean using your network to investigate work history. It may be someone who is not on the reference list but may have information or be willing to share information regarding a former employee. Sometimes those references are better than those that the employee provides. Dr. Patricia Kapper