What do you all think about music downloads taking over from physical CD single sales?

Personally I'm not too sure. We had the chart on in the car on Sunday and most of it was a load of rubbish. Maybe that is the current youth of today and I'm out of touch (getting old)! But as single songs downloaded from commercial sites are not just new releases is this really a good reflection of current new releases, as the old music charts always reflected?

Should they just show the sales of new releases? or all current weekly releases?

Quite funny Radio One managing to get the old Billy song back into the charts after 8 years though.