Tweets that are informative or funny — or, ideally, informative and funny — evoke the best responses. And tweets that contain old information, repeat conventional wisdom, offer uselessly de-contextual news, or extoll the virtues of the awesome salad I had for lunch today don’t, ultimately, do much to justify themselves.
So: Do be useful. Do be novel. Do be compelling. Do not, under any circumstances, be boring. –via Be Better at Twitter