Updated as you suggested. https://utopian.io/rules

Contributions Must Not Contain Spam
The contribution should not contain any clear attempt to profit from a commercial perspective and should not be written in a way that suggests the contributor is looking to maximise the returns. Moderators will require to edit the contributions that use unrelated tags or unnecessary/spammy information in the post. Contributors are allowed to use their signature at the bottom of the post and link to their social profiles, in a way that does not disturb the reader. Moderators will flag and hide forever spam posts that bring no real value.