I'm trying to avoid having rules, but since wikis have to be careful when it comes to posting images, I thought I would post this guide for the micro community.
First, here's where to look up the copyright tags
Now for micros we only have to worry about two types of tags.
If a micro is of a licensed character, use a Fair Use tag and explain that it is a fan art micro for non commercial means
If you are posting a template or a micro of an original creation of your own, then use the Public Domain tag explaining that it is your creation.
If it's your original version of a licensed character or concept, use the fair use tag saying it is a fan art micro for non commercial means as a form of parody.
Don't post someone else's micros unless you have their permission. I'll set up a general permission article later.
If you don't know whose micro it is to get permission, don't bother uploading it.