What are the implications of NSA surveillance on the average Internet user?
Except nothing has changed. This has been going on for enough time that if the average Internet user hasn't been effected by it yet then they don't have much to worry about in the near future. So for the immediate future there are absolutely no implications on users other than being aware that someone can look at your communications, which you should have assumed already. Because if the NSA didn't already have your information than Google, Facebook and every other social network certainly did, something that we have been well aware of for a long time.