I think the point you make is a common sense one
If someone out there 'knows something' then it is almost certain that are not your regular honest, upright citizen
If the crucial information is to come from seedy lowlife, then so be it ... if it gets Madeleine back who cares if the method used was to 'buy' information from someone who would not have helped unless there was money on offer
The McCanns have nothing to lose by offering a reward, given that it would only be paid in the event of Madeleine being found
Like you, I do not understand why they have not used that opportunity
Agreed Ica. I applaud their charity work but wtf...how is this helping to find their daughter?? If it was my daughter I would be out there in Portugal scouring every possible lead. Tracking every source and following every snippet of information until I either get her or find her body. What does Gerry McCann do? Goes back to work in a f..king hospital and leaves the search to a bunch of incompetents who aren't even in Portugal becasue they aren't even welcome there!!! What a f..king fiasco.
That may seem easy from the outside...
The McCanns were there for months. Neither they, nor the PIs could have interviewed anyone who chose not to talk to them.
There was no point in them staying there with the hostile atmosphere once they'd been made arguidos - and there were the twins to consider.
If Gerry had not gone back to work, they'd have had to have lived off the fund. And he no doubt mentally he needed a constructive focus that gave him a breather for part of the day from the emotional trauma.
Once they got hold of the files, there was obviously a lot to check through, detail by detail.
I really don't see what staying on in PT would have achieved.