@@rskingp, Always check that the sender is verified, this can be done on (https://www.paypal.com/verified/pal=*)
Replace * with buyers email, (like https://www.paypal.com/verified/pal=ba_ba_la_ba@hotmail.com) that way you can check them before they send you money, unverified senders are most likely to chargeback and win their disputes.