Many people make it a practice to never use the services of someone who actively solicits them- and to turn to those they seek out, with refernces from people they trust. There are good and bad in every bunch and searchers are no different. I have heard some good reunion stories because they did their jobs well, as well as some heartbreakers. Take your time and consider their services when you have hit the brick wall or when it is clear you do not have the time to do it yourself. Go as far as you can on your own first, and take your time with this decision if you get to thinking about it.
Genealogists can be valuable.
Take no verbal promises. If paying online, be sure it's a secured e-commerce site. You need to find this out and it may not be where you think. When you are close to making that respectful first contact. 1997-1999 Click for disclaimer and additional copyright information.