Close captioning

It would be nice if the whole internet would include close captioning with every on-line video. For some reason, my sound has not been working with EDGE for a while now and so I have to pass on most videos, unless I go to IE where not all videos will even play, but those that do have sound for me.

Maybe hearing impaired have special computers/pads/phones for this, but it limits them if they need/want to use another computer elsewhere.