Well your list of Fads has a few items then went Main Stream...
Segways are going strong and in several citys offering Segway tours as a thing to do. great products. Airports, malls and manufacturing warehouses..
Gay mariage is certainly main stream now in some states.
Reality TV is going strong and rising by the numbers.
Flavored Vodka-Sirock is one of the best selling alcholic products.
Facebook is here to stay as is Twitter.. these are the modern phones and means of communication.
Znga has yet to start its legacy in my opinion and will be one of the next $100+ social media company to acheive a 25+ billion market cap.
love your list--great chuckle. I'd probally quarrel with some (gay marriage, self-help (look at the non-fiction best seller lists) but on balance nicely found--or pasted. Only one point to make here; just wait a generation or so and they'll be back as something new. As for Zynga I'll ride with it for boom or bust.