Twitter now officially supports the cashtag. Going forward you can click stock abbreviations with a $ in front of them to get financial information about the company. So for example, when you search $FB, you'll see relevant tweets about Facebook stock doing poorly.
While this is cool, Twitter isn't the place you should turn for monetary advice. Ever. And people frequently get these acronyms wrong ($APL instead of the correct $APPL, for example). But if you're a finance asshole this could be a bit useful, if not kind of interesting. If you're everyone else it doesn't really matter because who cares for hashtags anyway? [TheNextWeb]