THANKS (not in any specific order)
Utmost respect to these guys:
Tapio Partti (machine repair, donations, inspiration)
Markku Reunanen (counters, UNIX help, other help)
Timo Leipälä (Telmac infos, donations, help with acquiring machines)
Kalle Ahonen (scans, donations, support)
Kimmo Tapala (physical support - always there to carry our stuff!)
Jari Viitala (arcade tech infos & lots of repair help, spare part tips)
Rami Maunula (lots of nice trades, infos and support)
Kevin Dempsey (Huge trades and effort from the UK)
Saku Taipale (trades, infos, support, being a good guy)
The following people have proven themselves to be good to trade / deal with -  or  deserve thanks for other reasons :

FINLAND

Pekka Hietaniemi, Mika Rajala, Rain Mutka, Seppo Pasanen, Mikko Hyppönen, Marko Latvala, Vesa-Matti J. Kari, Tero Helminen, Olli Laiho, Jani Koskinen, Toni Niemi, Antti Silvast, Petri Kukko, Petri Eloranta, Jarmo Aarrekivi, Petri Suominen, Pauli Halkosaari, Christian Kari, Lauri Vanhala, Janne Heikkarainen, Mikko Järvinen, Ilkka Husu, Mikko Kärenlampi, Timo Leinonen, Ville Nurminen, Lari-Casper Lakka, Per Backman, Matti Sahlberg, Jukka Nieminen, Jouni "MrJones" Nygård, many many others... (Huuto.net: viaton, rouhija, race-day, aropupu, thejake, dieder, Sklemola, tonisand, bmw-tuning ...)

USA

Edward "TedB" Brunner (many times), George DeBalko, Michael Mills 
Daniel "GBreadman" Stevans, Larry Lefebvre , Mark Randall, Anthony "JoStuff4U" Scanlon, Michael "GoodDealGames" Thomasson (many thanks),  Jason "Tips and Tricks" Wilson, Clint "Handheld" Dyer, Dean "KiDeanNg" Boornazian, Michael "Mike" Mize, Sean "multicart" Kelly, Video Game Liquidators, Wally Mann, Robert Nicholson, Eric "Cadimus" Chapin, Jason Kui, Alex Johnson, N. Sekera, Hider J. El-Hage II, John "Vecmania" Dondzila, Andre Outlaw, Dave Shykula, Ken Archer, Tommy Ross, Shawn Smith, John Greve, Mark Bowling, Robert "Pip" Haydon (good stuff!), Mercury "Videogames.org" Hess (BIG thanks many times!), Kevin Villines, Bleem.com, Mike Druss, Kai Darius Kohl, many others...

EUROPE

Marco "MarcoK" Kerstens (Netherlands, good guy), Nicolas "Sap1" Sapin (France, a really good guy), "The" Rikard Ljungkvist (Sweden),  Michael Carlsson (Sweden), Christian Andersson (Sweden), Thomas "Tom J" Jones (United Kingdom), Eric Boghos (Austria), Jonathan Dyton (UK), Werner Böttger (Germany),  Martin Nielsen (Denmark), Andre Sitz (Germany),  Phil Baxter (United Kingdom), Sebastian Barthel (Germany), Paul Hurd (United Kingdom), Stefan Walgenbach (Germany), Ralph Smith (United Kingdom), Stefan Piasecki (Germany), Johan Eriksson (Sweden), Brian Dehli (Denmark), Andrew Bamji (United Kingdom), Chris Hind (United Kingdom), Bert Groeneveld (Netherlands) -  big thanks,  Chris Hind (United Kingdom), Dieter "ccc---" König (Austria) - Excellent times many!,  A-C "Crille C" Mattsson (Sweden), Martin Kukac (Czeck), Steve Rich (UK),  Arnoud Helmantel (Netherlands, several nice deals), Torsten Strohwig (Germany), Kenneth Bernholm (Denmark), Kristian Göransson (Sweden), James Barber (UK), Richard Hutchinson (UK), many others...

REST OF THE WORLD

Shayn "Angry Bunny" Osborne (Australia), Lorenzo Bordoni (Australia), C. "Steempy" Coleman, many, many times (Australia), Minori Kambe (Japan), Sylvain "SlyDC" De Chantal (Canada), Paul Goff (Canada),Shanda Diotte (Canada), Bob Chrest (Canada), Luis Felipe Köppe (Brazil), Graham Percy (Australia), Ray Young (Canada), Lawrence "NeoGeoMan" Wright (Japan, many times), Robert "Sutekh/Ocelot" Stickles (Canada), some others...