https://freebitco.in/?r=6042987

https://www.sierrahash.com/?ref=126394

https://faucet.cloud/ref/1047582657

https://www.wormminer.com?ref=47575

https://www.eobot.com/user/1143556

http://txmine.com?ref=deep9717

https://cloudmy.cc/?ref=deep9717

https://zifimine.com/?referal=16109

http://emining.club/?rinvite=deep9717

https://www.bitzfree.com/?ref=YG95YXw2a21rZ2dsb3htd2JuZWVhc29AbmNp

While it may not be a scam in your opinion, it could be considered spam. Spam is not appreciated by the community and could be flagged or may result in action from the cheetah bot..
Some things that can be considered spam: