Should this tag be used for any images with guys in them, or just in certain types? I ask because I'm having a hard time setting my blacklist to show only girls (just my personal preference). A number of images seem to use tags that are fairly ambiguous.

The male tag is for images with only guys in them.

Ok, thx for the clarification. It looks like I can't filter quite the way I'd prefer, but I can get fairly close.

What are we doing about traps and reverse traps then?
I was going through the Ouran High School Host Club images, and I noticed that several with Haruhi in them had the male tag. I removed it, but I put the reverse trap tag on anyways. Are these two like the loli tag where an image gets tagged if it looks like a loli (regardless of the age)? Only a couple of the trap images with only the trap in there have the male tag and the others do not.

If its a reverse trap then its a reverse trap....

If it looks like loli its loli ~_~;;