Whenever you see spam or plagiarized content you can call for a downvote. You can also sent 1 STEEM to @steembasicincome with @miti in the memo and you both will be getting a share of upvotes from steembasicincome. You can also directly donate some STEEM/SBD to power up the account.

Also you can report spammers at https://steemcleaners.org/abuse-report/
Recently I've been doing both.