FWIW - this is my current ebay blocked list...blocked by name, so ive had bad dealings with the following...either slow/no pay, known shills, sketchy bid history, lowballers and such..
*kingofcards, *purplemoonlight*, 09emilion2007, 1999nlmvp, 1d0c93c91c047ab0cc194601649eb22fc342e91c5879323429, 1dooder78, 1of1football, 1superelitegolfer, 2011downtime, 201thecardcollector, 2mairj3, 3timechamps11, 480suave06, 49ersince81, 53matt72, 5410brandon, 57corsairplanes, 58newyorker, 7367dave, 8353garry, 87chevysilverado, 8df9b2c6d38780d5329212c57496a454a85ea46d5d444442749, 9034b85295644dbf83608a96d5c70a76719093242, 97518e70520143ecc342e91c58452bb61160668736, 999silverandgoldbuyer, aaronatwell2011, adam-12!, adkinstrent, adnohornets23, allabouttheskins, andrewrguy, andydaltoncollector, andydufresnesr, arizona_sports_cards, armysoldier25d, ashleyo4338, astillbr72, auto-rcs, baltimorebirdcage, bamafaninindy, baseball3211, baseballu.s.a., basesloaded2012, beauhallie, besautographs, besportscards, biddick5, bigdaddy280, bigdog9910, bighenniehen, billsfan34, billyboy0315, bkryche, bobdigital81, bodyslammer74, boomcity_kickz, breemdog, brewerb1, brin.kell, bryonrusso, burho.burho, burishc47, bus035, candeemann, capt.trips, cardfan808, cardshooter, caribbeanblonde4, carthage44, ccarpenter0226, chea1811, cheyanne0070, chicbetty, circlingskies, cnuavenger, collectablecollector, completelyvintage, coolcards30, cowboysheaven, cowboysnumber1, crazyoja08, creditsheriff, cris333p, cromartie3145, cruzinhi, crzyjess1984, csinvestigator, ctownsellers, dallas2760, danielrichter2010, dannygleason1951, davdavihatf, davidct2007, desireenjeremey, dewpugg, diecastandy1, diehard1918, dolphinsrule, donace56, doncoufal, dp231541, dynamite53333, elgato7664, elitesc, elliot1179, ericpslette47, esalescontact, eyvicito, fightterps, flboats4salemichael, floridasportsconnection1, fool5583, footballcardfanatic, frenchfriesguys1, garbage_dog, garybear4173, georgelovesautos78, gilas_pilipinas, greenthumb5025, grisagran, harjb137, hery08010801, hillj0278, hit6man0, hockeytape1, hottiepoladi, hull16rw, ilovepink31, iluvsandi, in4red, inktastic, inthegamecards2005, iron_city_collectibles, j_briden, j_rigs, jadebaka, jaggsportsbreaks, jak_sensi, jcndfan002, jcrau20002, jdp5587, jfrench91, jimmygaroppolo, jnew76, joan1173, joe458321, johansen911, johnafonso1, jpt26usa, jshearer200868, justirope_1, kaitlyn1990, karecon, karenelwess36, kathykards, kevrich92, king_of_rookies, kinzuajeep, klmjpgb14, kmjaramillo, kmmartinvestments, koolkat39, kttut, largepun, laugh612, lca1087, lcl2121, lee8714, legalcheryl, lgpatlaw, littlemonstersdad, lj24king, lljkmt, louisianaboy1976, lovecraftylove, lovemyash4, lsutiger0310, lz1069p, magicmagic2009, marinofan123487, marsanch_aobnjpcsh, martinmvp, massappeels, mastakilla46, mastermark11, mattingly4232, mattressplanet4, mccards23, mcsub1546, meech195108, member369841, metsfan1313, metsfan7979, mfgmma, michiganturkeyhunting, midwestlistings, mikeaustin4678, mikesallfootball, moebasketball, mooon22, mountainlover34, movaj, mr.bks, mrg_2005, mutigers2010, mw1, myauctionsales1, myboyz45, myownresto, nats0584, ndiddy78, nera20, nich_buy_and_sell, nicksbaseballcards, niner, nmsu-unm, nobmanini, novacardsfwm, nycardsdirect, nymet-86, oddballandy10, pab5942.fw658m, packerman13, papakon51, patrickbasketball7, paydirtsports83, peacelove069, penske1, pfeil_to, popsolestuff, powerseller9999, ppeepo, premiumvintage-goods, prospectnvstr, questelmo04, rand_man, rareautograph, rayman0009, razhot, recognize62, rgvalleycards, rigorous1, rjbigsky, rksportsandcollectibles, robertntanya2007, robertslat, rocnydeals, rods_cards, roll-jay, romleyjs, ronwhittle.480, ruffelton2, runningtiger13, sabzfan, saleens7saleen, salsbobs, samuel602, sashathecat2003, scalpem96, schultzjordan9802012, scorpionlotus, seehawkswin, sell401ks, serendipity_on_7th, sgallierjr84, shadow82rns, shan7_22, simonasian, sjmcollectibles, sk5677, skotie1963, slickhobby, smgcs, smoney859, soelman1, sorral_ybxtae3x, spiritsports, sports_memorabilia_etc, sportsfan-or-nut, sportssigned160, ssshazam, stang289gt65, steelcurtaincollector, steelerguy91, stlstu, sunshinemang76, super-sells-usa, suzanne4ever41, taylor987, terrapins56, the_marys_community_thrift_store, thebatman1977, thedoz1, theedge3218, theespyfam, thefuture-2008, thejoker4life, thepoz31, therealjwil, thesilverfoxcollectibles, thesportscardguys, tide381, tigermu94a3xx, toddzcardz, tonybromo420, topladyseller1, touchdownsc3, tpfeiler98, udaman2, unc_blue_15, us2015_dewe, verl20, vijulia1760, visions721, wagnergroup, wakingbake, watts078, wavluver, wdmmoviesandcards_2, west48pete, whi0942_2wzmqi, wisc_badgers, wiscographs, wiscokidus, wonderbread2309, wrestling_stuff-n-collectibles, yesrandom, zeller1021, zionhoops