RE: The Dynamism of Priority

The Guide To Hivelist Tag states:

The ‘contests’ tag is one of the more popular tags and is meant for users to promote any contests they are holding. For example, if you are holding a contest for your tribe or community and you want to promote it, simply add the ‘contests’ tag to your post and it will show up on Hivelist in the Contests area! Please do not use for contest result posts, we really just want the contest promotion itself.

That means you should as a minimum provide a clickable link to the contest you are participating.

For example, like this:

This is a contest from the stable of the #The Ink Well Community. Interested in joining? Kindly click on this: LINK

Actually it says you should use it only for contest you are holding. But in practice many bloggers who are participating in contests have also been using it and the founders of Hivelist have not admonished them. So, I believe they will amend the requirement soon.