[mmb]

Can't these by easily unblurred to reveal Britney Spears and Ashton Kutcher's email addresses?

[jskopek]

Unlikely, but it would be a cinch to determine the number of letters in the address; do a little creative guessing with that value and you could probably find it. Of course, having an interesting conversation with them would likely be a little harder ;)

[maukdaddy]

The addresses are likely for their publicists.

[mmb]

Possible but I'd be surprised if Ashton Kutcher's publicist was using an aol.com email address.

[ashleyw]

It can, not easily though, I think you've been watching too much CSI... :P

[jacobolus]

Try googling "deconvolution". This appears to just be a gaussian blur, so it should be trivial.