There was a time, when people kept nagging me to enter the social world to pump my startup and whatnot, and I even learned how to install several software to help me manage it (including some that Twitter bought and killed, something I consider a serious mistake of theirs).
I twitted prolifically, got several followers, managed to sometimes interact with famous people, then after all the difficulties in using their service after they killed the clients they bought, I started to forget more and more, until I wans't using it anymore.
Then now years later, I noticed... it made no difference, the only different between using twitter, and not using twitter, is that by not using twitter I save time to do other more useful things, and also more entertaining things, twitter is not good to get useful information, not good to entertain, and not a IM, in fact I have no idea what twitter is for.
So to me, twitter is pointless... Also extremely hard to use (ie: some people obviously saw some effect from twitter, but... HOW? I even used some tracking apps to help, like Klout and whatnot... I scored my "brownie points" a bit, but I always felt lost, what I should write, and why? And to who?
If I as user, don't figure why I am reader other people stuff, how as content producer I figure what I am writing, and to who?)