This is an unsolved problem; some people work around it by managing multiple twitter accounts, one for each "channel". It doesn't scale by topics, though.
OTOH if I have to think about which channel / user I tweet to, I think people would tweet less. A bit of noise is ok, I guess.
OTOH if I have to think about which channel / user I tweet to, I think people would tweet less. A bit of noise is ok, I guess.