12.5m users is pretty impressive considering what they're up against.
Facebook is vulnerable. The obvious way to hijack is to pull a Facebook on Facebook itself -- ask for your FB password and then copy out all your information, and msg all your friends.
If you could click a button and do a horizontal transfer to an equivalent service any time some other service crossed the line of what's acceptable to you, people would migrate in droves. Big companies survive because of inertia -- the truly disruptive technology that the Net should enable is to remove it.
"Plan B (R) is not a substitute for routine birth control. It's important to remember that Plan B (R) does not protect you from HIV infection (the virus that causes AIDS) or any other sexually transmitted disease (STD)."
That was unfortunate. But the community did jump in and tried too help. There was no one else saying or doing anything weird. Anyone can do something stupid. It was stupid and mean.