Send Power Point Slides before conference

I just returned from a conference and after sitting through several painful sessions I came up with this idea.  I wish for every conference you go to that before you arrive, they send out a link to a site that has the Power Point slides for every presentation/break out session/etc.   Every presenter at these things can make their topic sound good in the paragraph that is given to them in the program, but they are often misleading.  However by seeing their slides you can get a much better idea of exactly what it is that they will be presenting.  Plus you may get a clue as to what type of presenter they are and if it will be good.