Never heard of 'em before myself, although a quick glance at their web site suggests that they are in PA and actually have a street address and a phone number. I guess that's at least a start....
Where / how did
you learn of them? Why do you want to use them? I see that they also
sell timeshares. If you are buying from them are you also
obligated to use them for closing? If not, consider getting the closing moved into the hands of a known, objective third party closing company (like the one DeniseM has identified above, for example). I for one am never enthralled by the prospect of seller and closing company potentially just being one and the same people. In such instances "escrow" of funds isn't really "escrow" at all if the seller and closer are just the same people in the same location, merely changing their hats for different parts of the transaction. That may / may not be the case here; I see that they do claim to offer closing services "a la carte".