Microbadge: 
This entry is here to allow those users who track their games played on the Geek to include unpublished games that either
A. the designer does not care to have publicly discussed
or
B. are not finished enough that it makes sense to add them to the Geek.
It is still perfectly fine to add unpublished games to the Geek if the designer approves.
If you have photos, files, reviews or session reports for a prototype, they should be submitted under an individual game entry (assuming the designer approves).