my experience with Paypal for getting money back after got scammed by seller

Have you ever use Paypal for making payment ?Have you ever scammed via Paypal ?Have you ever win a dispute in Paypal but you can't get money back because the seller take money from his paypal account and go away ?I was in this situation two times ,and I took my money back in both .I know many peoples who suffered the feeling of losing money when he /she got scammed via Paypal . And most of them