At the moment it has around 50 posts, mostly of the Jacket and Label girls and Satsuki Rin, with some odd exceptions like post #3959251. It seems the theme is them looking like an aged photograph, but that does not match all posts.
Its earliest usages make the most sense to me, being used on things resembling "ancient civilization." (post #2425208) I'm not sure why random users keep coming along and nuking it from appropriate images, just to add it to completely nonsensical ones, such as user #507781 emptying it before adding it to three random FEater posts.
@tremolo_measure Since you seem to have adopted the tag, can you explain what you're using it for? Some of them have a "sepia" look, but others are just red or yellow toned, and I wouldn't use "ancient" to describe any of them.
I'm gonna propose a deprecation on it, ancient is too ambiguous and broad a term to make into a manageable tag. 95% of the current posts don't even have anything to do with anything "ancient," they're just touhou posts with an orange filter effect. Things like post #4897302 and post #4894353 could reasonably be made into an ancient architecture or ancient civilization tag instead.
Its earliest usages make the most sense to me, being used on things resembling "ancient civilization." (post #2425208) I'm not sure why random users keep coming along and nuking it from appropriate images, just to add it to completely nonsensical ones, such as user #507781 emptying it before adding it to three random FEater posts.
@tremolo_measure Since you seem to have adopted the tag, can you explain what you're using it for? Some of them have a "sepia" look, but others are just red or yellow toned, and I wouldn't use "ancient" to describe any of them.
I have used this tag based on two comments seen in this post #4780999 any image that looks "very old" I add the ancient tag to it, although, I agree that it may be a bit ambiguous, since the sepia tag exists.