I have never found it like that, but i've never tried to 'market myself' and tend to read more than i write on there.
twitter for me is / was combination of local / travel news, keeping up with some friends / acquaintances, following things like football team, some music artists, cat stuff, some london history accounts (although the ones that are dog-whistle 'look how it all used to be better before all those minorities were here' don't get followed, even if the pictures are nice.)
don't think i ever tried to get attention from 'famous accounts' - nearest i got was a very brief exchange with steven van zandt (e street band) when he was trying to understand football (as in soccer not that american nonsense) when the world cup was on.
i'm coming more and more to that conclusion.
don't think i've looked at it for a week or so. bit annoying that the local / travel info stuff isn't easy to get anywhere else (local bus company is good at putting any problems up on tweeter, as control room is staffed 24/7, but think that's the only real time updates they do.
i'm making an effort to go and look at a few blogs, rather than waiting for them to post on tweeter that they have done an update.