Arguably the most influential investor of all time has finally been persuaded to join Twitter, causing an online stampede to receive his financial wisdom. Warren Buffett joined the social media brigade today (complete with verified checkmark) and within hours his account racked up over 100,000 followers... and counting.

So what will the Oracle of Omaha tweet? Probably not much. Or at least not anything you can use to make a killing in the stock market. His advice is too valuable and his words too powerful to simply give away for free.

Buffett is certainly a font of business wisdom and not exactly secretive—his annual shareholder letters for Berkshire Hathaway are the stuff of legend and frequently poured over and cited by investors and researchers looking to unlock his secrets. But he's also savvy enough to choose his words carefully, knowing how the wrong thing at the wrong time can cost a lot of people a lot of money.

Then again, he is good with the one-liners and is usually an entertaining guest during his frequent appearances on CNBC, so it shouldn't be a total snoozefest. He'll probably gladly share some winning bridge tips with you. (Like many finance kings, he's a notorious card shark.) Just don't expect any tips that you can RT directly to your broker for a big score. Never forget that even if you know what he knows, few people are able to make the big bets he can.

His advice, while succinct and memorable, is usually just smart enough to earn a lot knowing nods from other smart people, but not specific enough to do anything useful with. So get ready for infrequent, but quotable gems like this one:

"Time is the friend of the wonderful business, the enemy of the mediocre."

Uh... okay. Now which companies are the mediocre ones again?