The main advantage is that cashback returns real value, sometimes even with no wagering requirements.
http://horsecity.ru/phpBB3/viewtopic.php?f=21&t=330116
https://www.ww2.site/forum/viewtopic.php?t=36458
https://mmomakemoneyonline.net/threads/cz-online-hry-stejne-jako-casino-czech-republic-online.673277/
http://forum3.bandingklub.cz/viewtopic.php?f=50&t=1274383
https://www.ww2.site/forum/viewtopic.php?t=123216
http://horsecity.ru/phpBB3/viewtopic.php?f=33&t=185910
http://come4play.com/forum/viewtopic.php?t=23761
http://users.atw.hu/tunedthings/viewtopic.php?p=381810#381810
https://debate.socialism.nl/forum/showthread.php?tid=246607
http://forum.bandingklub.cz/viewtopic.php?f=22&t=1447042
http://023002.com/forum.php?mod=viewthread&tid=1726964&extra=
https://mmomakemoneyonline.net/threads/jaky-je-nejlepsi-zpusob-jak-vyhrat-penize-poker-online-hry.531033/
http://www.prepody.ru/topic97163.html
http://47.88.101.141/forum.php?mod=viewthread&tid=192403&extra=
https://www.clubhombre.com/mybb/showthread.php?tid=17801
https://www.clubhombre.com/mybb/showthread.php?tid=19495
http://oldsite.giessen46ers.de/fantalk/viewtopic.php?f=1&t=177563