It's not a "flop". Many of the most respected tech bloggers have permanently deleted their Facebook accounts. I did so myself about a month ago when I heard that Zuckerberg called FB users "dumb fcks". Who cares about hooking up with people you went to high school with anyway?
Yes Facebook is evil. When I saw that Zuckerberg called users "dumb f*s" for trusting him with their data, and I mused on how criminals could exploit that data via phishing, pw guessing, and social engineering schemes, I joined the Perma-Delete revolution.