I have Facebook, but for all intents and purposes, I treat it as if it doesn't exist. If your app needs me to log in with Facebook, I won't use it. Likewise, I

I have Facebook, but for all intents and purposes, I treat it as if it doesn't exist. If your app needs me to log in with Facebook, I won't use it. Likewise, I have Twitter. I use it daily. However, if your app isn't related to Twitter and needs me to log in with my Twitter account, I won't use it. Neither of these sites are ones that I particularly want to see turn into a generic identity for the internet.