>>http://www.cnbc.com/id/101568250
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>>
>>This one stood out:
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>>>>The GAO surveyed taxpayer errors from 2006 through 2009 and found that tax returns prepared by preparers had a higher estimated percent of errors—60 percent—than self-prepared returns—50 percent.
>
>My guess would be that's because people who use paid preparers have more complex returns than people who did themselves. When you're filing 1040-EZ, there's not a lot of scope for mistakes. When your return is an inch thick like hours, there are a lot more opportunities to get something wrong.
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>So, I guess I'd like to see those numbers adjusted for complexity.
>

The NY Times had a disturbing article the other day about the glut of unscrupulous and unqualified tax preparers. They don't know what they're doing and they charge outrageous fees, often to those who can least afford it.