Ben Wallace's decision to effectively release his full accounts will place pressure on his fellow MPs to follow suit. The notion of doing so will prove uncomfortable for many.
For what it's worth, I am uncertain as to whether the prurient witch-hunts this may lead to, and the less flexible and attractive operative environment it would guarantee if adopted as a general approach, are good things. I certainly prefer full disclosure to the Conway approach, of course. I'm just not sure that this is the best way to go.