If you have created a post related to West Africa and tagged them, then they will surely assist to promote your post and if worthy enough resteem and upvote it as well.
In order to grow minnows they also mention a comment stating that the post has been found worthy of the west Africa group and they also inform you to not to forget to tag them in your future post which is related to them.
It is a wonderful initiative by them and they work really very hard to promote all the posts referred to them. They are one of the few communities that really work in tandem with the steemians.
To answer your question, Yes they do curate crypto currency related posts provided it is related to and is beneficial for their community
RE: Musing Posts