Payment systems
Free skins let you enter a giveaway for free skins. There is a detailed description of how it works on the website. Promote on social media and increase your chances. Sounds good, but there is no choice on free skins, and it is unclear how to get the free skins.
Datdrop.comUse top100-list for +5% to deposit 
OPSkins DropUse 174965 for get free points 
CSGOLetUse top100-list for 50% of points 
CSGORewardsUse top100-list for receive a bonus 10% 
IdleEmpire76561198440007783 for free 50 points balance 
CSGOBankBot1054993 to get free credits 
CSGOCaseUse top100-list to get 150 free tokens 
CSGOCoinsUse 244169 earn 5% of the coins 