Twitter, which is getting a crazy amount of buzz right now as the go-to place for capturing Iranian dissent (as well as Lindsay Lohan’s boobs and what Ashton Kutcher had for breakfast) is also getting quite a reputation for breaking market news as, or before, it happens. There are some sites that specialize in aggregating stock-related “tweets”, like StockTwits, but even without services like that, just knowing whom to follow can get you a piece of the uncensored action. Barrons puts up a mostly fluff piece this weekend, but it should give you an idea:

Already, Twitter influences stock and options trading.

“Since brokers have to save instant messages and e-mail, but thus far have no such mandate for tweets, well, you can guess that the far more discreet traffic is on Twitter,” says Jon Najarian, of optionmonster.com. It was on Twitter that Najarian first heard last week’s news that Matrixx Initiatives ‘ (ticker: MTXX) Zicam nasal spray allegedly damaged people’s sense of smell. “Guys started tweeting and the stock dropped from $19 to $13,” he says. Matrixx has since pulled Zicam off the market. The stock was recently at about $5.55.

I’ve seen everything on Twitter from people pointing out upward action early on in $UNG this month, to the breaking news of the sad departure of the Merrill bull. If you’re not at least lurking on there, you’re missing out – whether you’re bullish or bearish on Lindsay Lohan naked.