Citigroup

It's tax season, which means the annual deluge of W-2s, 1099s and other financial forms. But thousands of Citibank customers will have an extra surprise in their mailboxes: 1099 forms reporting their frequent flier miles as income.

On Friday, it looked like this week would be ugly. Standard & Poor's had just downgraded the credit ratings of France and several other E.U. countries, the latest domino to fall in Europe's slow-motion economic train wreck. But at least in the U.S., the stock market has shrugged off that news.

There's never a dull moment on Wall Street, especially now that we're hitting 2012's first earnings season. What will help shape the week that lies ahead? Earnings and answers from banks, Google, eBay and IBM, and a big education related announcement from Apple.

We've schooled you on what CardRatings.com ranked as the worst credit cards of 2011, so it's only fitting for us to share which pieces of plastic would actually be wise to carry in your wallet this year.

Credit card rewards are the new social currency. Citibank customers can now use Facebook to pool their rewards points online. The bank on Tuesday launched a Facebook application that lets users team up to use their points, whether it's for charity, a group gift or a personal goal. Citi says it's the first bank to offer such a feature.

By most indications, the U.S. economy is recovering fairly well for the time being. But across the Pond in Europe, another story is unfolding that has the stock market worried -- and it should have your attention, too.

The biggest bank in America isn't the one you might think: JPMorgan Chase recently knocked longtime rival Bank of America out of the top spot. But is bigger better? Not when it comes to customer service.