It is so easy to sneer. Easy to sneer at newbies. Easy to sneer at other people's "rubbish". Easy to sneer at what other people do with social media.
I try not to.
One person's trivia is someone else's context. How can I trust you if all you do is 140 character press releases? If we make people feel self conscious about "talking rubbish" they won't talk at all.
We need more "rubbish" on the Internet not less. It is up to us to learn to filter it - not tell the rest of the world to behave themselves!