Twitter is good for breaking news, letting you know when your favourite trade tips site has made a new post etc. (Google alerts is good also.) And yes, a few HC-ers (and ex's) post on twitter - each of them prob has a list or at least followers.
Agree with poyndexter, for all around, to my mind this is the best place to discuss particular stocks, charts, impact of news releases and the share market in general.
