Pinterest is social bookmarking and is (obviously) incredibly popular. Delicious pushed "tags" as its killer feature. But if it had dumped putting tags front and center, and instead focused on beautiful photos of the items bookmarked, maybe it would have taken off more.
I've already up voted you, but have to praise this insight. Folksonomy is a wonderful navigation and subscription method for the early adopters, but I still hear my wife telling my son to "search for a recipe you like on Pinterest". It's perhaps the Yahoo! vs. Google aesthetic in the sense that Delicious appealed to curators who were comfortable navigating by concepts, while the rest of the world just wants to find a like-minded, curated world that they can navigate by search.
I happen to agree that the new interface is incredibly difficult to use, UI-wise. In fact, I switched back to old maps for this reason. Unfortunately, I don't recall the specifics which got me frustrated. I do recall that I would very often be wandering with my mouse trying to figure out what to click next.
Haven't noticed the performance problems though. I'm on a Macbook Pro, using Chrome.
NSA overall has certainly been successful in stopping attacks.
The major question was the effectiveness of 215 phone metadata surveillance in particular, which is the thing that was hotly debated. But even leaving out 215 metadata there were still about least a dozen plots with actual planning/action taken for them and probably 35-ish more that were detected and either stopped before they reached that point, or verified to have trailed off on their own.
Is there a particular Facebook app you use, or is it more a status update kind of thing: "Hey, any takers for my old iPhone 4" ? I guess that would work for a one off thing. But selling stuff to my friends I feel that I have to give them an exceptional deal. And I wouldn't want to pollute everyone's feed with a bunch of items.