Millennials hate debt, aren’t crazy about credit cards and occasionally post photos of the house or car they just bought on Instagram.

That’s some of what Facebook IQ — a unit of the social network that combs through user data with an eye toward marketers — found in a report released on Monday that looks at how Americans on Facebook between the ages of 21 and 34 manage their money.

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“Millennials are diligent in paying down debt, careful with credit cards and dedicated to accumulated savings,” the Facebook researchers wrote. “The burden of debt weighs so heavily that millennials have redefined financial success around it, with 46 percent saying that financial success means being debt free.”

The report indicated that, if you run a company that offers financial advice to millennials, the market is ripe. Young people spend plenty of time talking about their finances on Facebook, but only 37 percent have a real money-management plan in place, according to the report. People in this age category tend to be likely to save, with 86 percent saying they stash away some money on a monthly basis, but they are less likely than their parents to invest those dollars.

Part of the reason behind that may be that millennials got their economic schooling during the Great Recession, making them more distrustful of established banks and institutions — and 2.5 times more likely than their parents to trust robot financial advisers, which largely automate investing, charge lower fees and require lower minimums.

Oh yeah, and when they make a really big purchase, sometimes millennials will post pictures online with hashtags like "#newcar" or "#newhouse."

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