Most often, such bonuses are Sign Up bonuses, given as a reward for sign up.
https://mmomakemoneyonline.net/threads/cual...gentina.512349/
https://bbs.chaken.net.cn/forum.php?mod=vie...6588&extra=
http://sharecovid19story.com/viewtopic.php?t=2745127
http://forum3.bandingklub.cz/viewtopic.php...5&t=1448451
https://www.ww2.site/forum/viewtopic.php?t=42009
http://users.atw.hu/tunedthings/viewtopic....p=334994#334994
http://881.cz/forum.php?mod=viewthread&...7748&extra=
https://talk.hyipinvest.net/threads/276639/
https://www.ww2.site/forum/viewtopic.php?t=92473
http://www.prepody.ru/topic95648.html
http://www.prepody.ru/topic40258.html
http://sharecovid19story.com/viewtopic.php?t=2759020
https://www.ww2.site/forum/viewtopic.php?t=10909