Many of us spend little time thinking about Social Security, but that can be dangerous, since it's likely to provide a meaningful chunk of our future income. Indeed, it provides about 30% of the income of the elderly, on average, and for 12% of elderly men and 15% of elderly women, it provides 90% or more of their income.

So aim to be at least fairly familiar with the program, so that you can make smart decisions about it and get more out of it. For starters, here are three Social Security mistakes to avoid.

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Source Fool.com