I think you know I'm in favor of this because exposure to tools means more and better use of them. Also, people have said the data would be interesting to them in a "wait, who is that person?" moment. My only concern would be that sort of information -- this is a picture of Adam Lambert -- overtaking the actual accessibility function of the description -- Adam Lambert is doing dirty things to his microphone with the caption 'insert something dirty here.' But that doesn't seem very likely.