How can you tell a legit site from a fake scam?

On Yahoo articles on how to save money they said that there are online coupons to get free stuff but didn't say any links. Plus, there are WAY too many scams and rip offs out there. How do you know what is a scam coupon and what is a real coupon? Is going to trusted sites and getting their samples safe (for... show more On Yahoo articles on how to save money they said that there are online coupons to get free stuff but didn't say any links. Plus, there are WAY too many scams and rip offs out there.

How do you know what is a scam coupon and what is a real coupon? Is going to trusted sites and getting their samples safe (for example)going to foodnetwork.com and getting a free food network magazine?)

How do you tell if it's not a scam?
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