You can promote posts made with esteem, boosting is a one time boost to a post while promoting will increase visibility for a period of time on the tab "Promoted" of esteem.
You can only boost the posts may have not received the vote that ocasionally esteem app gives.
In the post I choose boost, it takes me to points menu, choose boost but it gives me error...
Once you boost, then your post will be queued and reviewed by eSteem Curator team and if qualified, it will be boosted.