Twitter, if it's used for your work or business then I can understand, like a lot of internet marketer guys use it religiously, it's for building relationships, making contacts, and if you've got a big bunch of followers and you need some help with something you can just tweet and maybe you'll get a useful answer…
But a lot of what I see there is like
Taking my daughter to school…..it's raining
There's no #, they're not talking to anyone, just giving a running commentary on the boring stuff they do, and even when they are talking to someone, it's often just crap, and it's just too ephemeral for me, I really hate ephemeral, it's gotta last, if possible.