Hi @cardtrader,
Thanks for sharing your Splinterlands content, I'm a moderator for the @contestkings community!
Did you know there is a Splintertalk tribe set up by the developers?
The tribe is used to help distribute SPT tokens through a rewards pool to players talking about the game.
When you use the SPT tag in your post curators will upvote when the featured content has benefit to the community.
In the future please consider using the SPT tag so we can recognise the quality of your contributions.
So I relate right, When I post about the steem monsters, Use the tag SPT to give the post higher visibility?
Correct and you will earn a token called SPT (Splintertalk).
It can be sold and purchased on the steem-engine exchange (https://steem-engine.com/).