I'll be the first to put my hands up and say that I don't know the exact ins and outs of this specific story - partly because I have an 24 hour news appetite for new stories, not the same recycled articles that newspapers have been churning out for 6 weeks in a (perfectly well-intentioned) attempt to keep the issue current. But my gut instinct is to challenge why it's so sickening that the journalist should ask if the McCanns had anything to do with their daughter's disappearance. Another example of the mass media's willingness to pander to emotion.
Incidentally, there is (again in the G2) an interesting take on the suitability of the Madeleine appeal for being featured on Crimewatch - you'll find it here. The BBC's Editors blog, too, has an interesting take on the issue and finally at least acknowledges that the tide of public opinion is turning against Gerry and Kate McCann.