I like your points but I'm not sure FB is just a "social movement". We are on the 2nd generation of mobile phone users. My 15 yo daughter didn't forsake a cell phone because I have one.
Same here. Kids will still use Laptops, PCs and Cell. Phones but probably won't use the same sites as their parents when going on the web. Because the PCs are enabling devices that get you some place while the sites themselves are venues that you go to.