For sure. As a seller I think services like FE make a lot of sense. They have relationships with a lot of potential buyers to put your business in front of. Unless you're well connected it's going to be a lot harder to drum up buyers on your own. As a seller what you want is an auction where multiple buyers are competing to buy your business.
As a buyer that's the last thing you want because it drives the price up. See point 6: http://www.berkshirehathaway.com/2000ar/acq.html.