Imagine you're a user whose "blog" is facebook, and primarily sends texts, tweets, and 2-line status updates / comments. Email is like paper mail, used as an archive for official documents / notices, or used on the work computer for work things, and rarely replied to ("Why did you email me? Just text me or facebook me." aka "Why did you send me a real letter?").

This sounds like a hypothetical, right? My brother's laptop broke for a year, and he was fine on his phone until it was recently replaced.