How do you use it?
Ok i am going to explain it very simply so you can understand it easily.
Suppose there is a person A and person B.
Person A wants to buy something from Person B for bitcoins..But Person A doesn't trust Person B (probably Person A thinks Person B can run away with his bitcoins)..Also may be Person B doesn't trust Person A either..In any case they can't make a deal themselves (due to lack of trust) so they contact a third Person say,Person C..Now Person C is the oldest And Trusted person on which Majority trusts..So Person A sends the bitcoins to Person C then Person C confirms to Person B that he has send him the coins,Then Person B complete the rest of the deal and then Person C forwards the cojns to Person B..Here Person C is Escrow..Thus Escrow Helps prevents scam..