Think your tax guy knows what he's doing? Better be sure. The Internal Revenue Service warns that tax preparers who intentionally cut corners, or are downright incompetent, can land clients in hot water, as well as cost them a bundle. How do you separate qualified preparers from scammers? The IRS has lots of information on its Web site, and Bank rate’s article "Checking out your tax preparer" can help, too. read full review »