It's not online privacy that's broken. All that's changing is people's awareness (or more importantly lack of) of what privacy means in the digital connected world.
Street view is a good example, no one bothered to drive around the world taking 360 pictures of everything and logging the gps coords, so before Google did it, that information just wasn't accessible but more importantly it wasn't private either. By making it easily accesible to all, made people jump to outragous claims of privacy invasions. But afaik there isn't a single country where the roads aren't owned by the 'public'. So everyone has the right to go down a street and 'look' and so the drunks, cats in windows and people leaving sex stores with Black Mamba dongs where doing so in public and could have been seen by anybody. Just because Google 'looked' and stored what they saw, doesn't change this fact. If you don't want Google or anybody else to see what your doing, don't do it in a public or publicly visible space. You've never had the right to stop people looking through your windows, but you do have the right to block those windows, that's your choice.
The wifi mac/ssid issue is similar, you are publicly broadcasting those bits of information, anybody can retrieve them from the 'public' electromagnetic waves and store it. You decided to make those bits of data public when you chose to use WiFi tech, the fact you (and a lot of others) don't understand or care how WiFi works is irrelevant. Again you have the choice not to use WiFi.
Similar with FaceBook, you are choosing to publish information to a third-party. At the end of day it doesn't matter what privacy you thought you'd agreed to when you hit 'submit'. You've choosen to make it less private.
I think it boils down to: "People are slowly realising just because no-one gathered or analysed the information before, doesn't make that information private."