I mean, to be fair, McCain himself has said “I am learning to get online myself, and I will have that down fairly soon, getting on myself. I don’t expect to be a great communicator, I dont expect to set up my own blog, but I am becoming computer literate to the point where I can get the information that I need. I don’t e-mail. I’ve never felt the particular need to e-mail.”
http://blog.wired.com/27bstroke6/2008/07/mccain-says-hes.html
There are also photos of him using a cell phone and a Blackberry, so it’s pretty clear that he _could_ email.
I mean, it was kind of a weak and stupid ad, but I try as I might, I can’t see this as “mocking his injuries”.
McCain says this because he downplays his injuries, because he is in many ways a modest man.
Obama has misused this modesty to attack him for his war injuries.