It looks like someone (Guess who) is a REALLY LAZY TAGGER.

Where in the rules does it say that I have to tag it?

rrciciBULITANYA said:

Where in the rules does it say that I have to tag it?

Right in the How to: Upload section. (http://danbooru.donmai.us/wiki/show?title=howto%3Aupload) I will grant it mentions tagging in the form of a request rather than an imperative, but the general guideline is if you upload something, tag it.

Yaoi? I think this should has "Spoiler" tag instead...