Can I get a medal for a spot if it has just 12 fans?

yes :)
while people speculate on the medal formula and tell you its all aboot ratings my experience on this site shows that its undoubtedly possible- ratings or no ratings.
i still urge you do add valuable content with proper keywords,headlines and credit. Try to add stuff other fans will enjoy. Make it searchable with proper keywords and specific titles. Dont just add to get a medal.

Absolutely! As long as people rate the content, it is possible to get a medal. If no one rates your content after a month, you can go to the link and someone can rate your stuff. :)

I got a medal for I spot I created that only had 7 fans at the time. I had been submitting stuff for months but no one had rated, once a user rated my content I got a greenie.
Crux of the prob: No one rates = no one gets a medal.
The up side is that if ONLY ONE user rates, that makes all the diff!