I have never wondered on that one before but lemme think of somethings u can do do...

1) Make sure you save the communications you have with freelancers for atleast 3 years.
2) Use paypal as it saves everything in history so you will know who you paid and when you paid.
3) Treat this as a freelance expense or other expense

Boy this is one loophole IRS hasn't discovered... lucky indians, not paying uncle sam any dollars they are earning