And for people doing cash transaction, the best way not to get counterfeit bills is to insist that your buyer takes the money out of the ATM in front of you; if that's not possible get the detector pens, but remember they don't always work.
It's pretty simple:
1) Don't take checks unless the buyer is willing to let it clear; and this is only for transactions where mailing is involved.
2) Use PayPal only if you are selling something and will mail it. This again makes sure that you have proof of delivery (since the buyer has to put in his/her address)—always use a traceable method.
3) Use cash only for in-person meets; don't consider checks, traveler checks, gift cards, money orders, PayPal, gold ingots, etc.
1. Buyer leaves positive feedback (like this really happens often)
2. 3 business days after item is confirmed by shipping outlet (ups,fedex, usps)
3. 21 days have passed and no complaint from the buyer
1) Yes buyer leave positive feedback—unless you're saying you don't. As a buyer I always try to resolve it by contacting the seller; it's only fair to them—I've waited as far as 3 months. Yes that pretty much does defeat the purpose of buyer protection, but I eventually got the merchandise and was refunded shipping.
2) That's why you always ship via a trackable method; once it's delivered call PayPal immediately and they will clear your account.
3) If you have to wait that long to get your account cleared, you clearly either shipped it wrong, sold it to a Nigerian, or you didn't ship it at all—that of them the fault of the seller and no-one else. Remember if your item was is suppose to arrive in 3 days and it's 5, maybe it is lost…