For one, a site can restrict the amount you can cash out from your bonus winnings.
http://horsecity.ru/phpBB3/viewtopic.php?f=29&t=206038
http://forum.bandingklub.cz/viewtopic.php?f=41&t=1328864
https://www.rcfl.com.hk/forum.php?mod=viewt...4082&extra=
https://one-diz.3dn.ru/forum/15-6382-1#12547
http://60.250.226.63/ipkb/viewtopic.php?f=41&t=1934538
http://www.lada-xray.net/showthread.php?p=213956#post213956
https://forum.zweb-apps.xyz/viewtopic.php?t=58302
http://treasureillustrated.com/showthread.php?tid=367685
https://www.ww2.site/forum/viewtopic.php?t=69519
http://gwenael.free.fr/diss3/viewtopic.php?f=8&t=26100
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http://www.prepody.ru/topic97233.html
https://teamaxg.com/showthread.php?tid=84422
https://talkingpoints.org/subx/showthread.php?tid=43044
http://forum.bandingklub.cz/viewtopic.php?f=48&t=1541192
https://www.ww2.site/forum/viewtopic.php?t=295796
http://treasureillustrated.com/showthread.php?tid=324476
http://forum3.bandingklub.cz/viewtopic.php...8&t=1346279