This kind of texting style is one of me pet peeves (i think that's the expression).
To me messaging is about wanting to talk to someone.
But if i am on-line, and suddenly one of my friends writes me and then doesn't respond when i answer, it really annoys me.
i always try to explain it like this "you would never call someone on the phone and not talk to him then, would you?"
To me, that's what they're doing.
They're initiating a conversation and then don't participate.
It doesn't really help either that i was raised to be punctual so if someone lets me wait for 20 minutes or more for an answer, i feel disrespected (as they couldn't respect our conversation enough to answer)
I would not have a problem if they simply said "Sorry gotta go and do the laundry." or " brb." or anything like that. But they don't.
The problem with letting someone wait for 20+ minutes is, that you start to do other things then.
You clean your flat, you start sketching, you play a game, and then, when the answer's finally coming after deity knows how long, you rather continue with your "distraction" than talk now. because now you lost the talkative mood.
I'm probably considered a SS by my friends because of that, but everytime i don't get an answer for more than an hour, without being given a reason, i simply log off from the messengers. (who needs to be on-line in a messanger, if there are no messages