I once wrote Tommy's mom via the Facebook page and offered to do some snooping around (digitally). I asked for her ok and asked some questions, pleading for truths. She said only a little, seemed very thankful, but wanted to meet up to talk to answer any questions. I, unfortunately, live far away so I was not able to do that, and judging by her silence, I assume that was a deal-breaker (understandably so, as she would have to divulge personal family information that may not be too encouraging at times). That being said, if anyone is anywhere close to them and is very serious, meticulous, and professional and really wants to help them find their son, I would encourage you to contact them. I think they are sincere and NEED the assistance.
I mentioned to her that, as a parent, she has to have a gut feeling about what happened. She said she does but "no reason as to why or where".