21. IRS internet scam
This is a really audacious scam, but it has been working. You may receive a call said to be from the IRS, claiming you owe back taxes. If you don’t pay up you will be arrested. They offer you a quick solution. Simply purchase a gift card at Amazon or iTunes and read the code to them, they ask. Of course they are not from the IRS, who will never call you before you call them.