From D&D Wiki
Barnstars are a way of appreciating a User's contributions to D&D Wiki. They are generally given to Users for a long-history of good contributions, be it in the form of new content, removing spam, or other helpful acts. To learn more about Barnstars, see the wikipedia article on them.
How to give a barnstar
To give someone a barnstar, you can use the following text (in wiki-markup):
The barnstarname parameter should be replaced with the name of the barnstar you want to give.
The message parameter should be replaced with the message you want to accompany the barnstar.