I have seen comments that some orchestrate their followers to harass some Twitter user. Intriguingly, I’ve also seen those same people participating comment flooding.
The main thing about flooding I have seen is that individual Twitter users are not causing the flood, but a collective effect of a crowd.
Some cases someone (with a good amount of followers) pick up a critical comment and RT or comment and mob starts to gather. After the comment food researches critical mass, flood feeds itself and maintains its momentum for hours.
If ones friend is comment spammed, it is orchestrated harassment. If someone unknown or some with opposing opinions is flooded, they got what they deserve.
This phenomenon is not nice at all.
It would be great if you see a comment RTed / commented and you disapprove, before joining in, consider if you have something constructive and novel to contribute to this issue?
If not have anything constructive and novel to contribute, please do not join the mob.
Comment flooding (spamming) is not a nice experience and it does not help to communicate your disagreement in any meaningful way.