The chart above shows the number of times convention speeches (and Willard's 47% speech) have been viewed by the users of YouTube. Note that the president's convention speech has been viewed almost five times as much as Willard's convention speech (and Bill Clinton's speech was viewed almost four times as much as Willard's). In addition, Michelle Obama's convention speech was viewed nearly six times as much as Ann Romney's speech.
I don't know that this means anything as far as the election is concerned. It may or may not. But it has to be encouraging for Democrats and depressing for Republicans.