Yeah, right - "no one will use it for every tweet notification, it will only provide contextual information" - it will be used for whatever people want to use it and we know what people want to use it for (porn).
It's not hard, it's an innate characteristic of porn. It's the inverse of rule 36 - as long as a communication channel exists, it will be used for porn, no matter how inconvenient it might be. Also, playing it straight, someone will have a fetish for porn over that channel, no way around it.
Because no one would ever want to see porn during sex with their partner without being obvious about the whole thing? (depending on relationship and stuff, naturally)