I would be curious as a separate thread in how many buyers other sellers have blocked. I know my list keeps growing. Once on the list, I never take them off regardless of circumstances.
Here is my list. Less than 10 are because they caused trouble. All the rest are from others lists. (someone would warn about a buyer or seller and I would add them.)
2bushgardens, amyp1664, bryanhamilton1, cad777864, cdickerson361, chatho777, christopherthissen, dallasresellers, dezoologist, earthmetalgear, g-mouse, georgebarcellos, globiker, jonnyray50, julicesa-73, kzkz15, lacyway6, largedistant1201, largedistant1202, largedistant1203, largedistant1204, largedistant1205, largedistant1206, largedistant1207, largedistant1208, largedistant1209, largedistant1210, largedistant1211, largedistant1212, largedistant1213, largedistant1214, largedistant1215, largedistant1216, largedistant1217, largedistant1218, largedistant1219, largedistant1220, lectronix2020, library_services, lmweb68, lovemy*boys, luvmylife57, marketing-master1, mricheyus, nguyen321, pti1172, raj1000561, richest110, sean.gherciu, sellit78money, simplysellingstuffdenver, sparkleplenty122, torrdo9, uniquefindings-650, voitsekh_k, wb5757, wesellitall2020, widowssonjoseph, xa-electronics
I hope none of you guys are up there.