I've seen that there are art uploaded here that are released during or in connection with Comiket, unfortunate they are not tagged as being part of said release (C89 for instance would refer to art released at the event which was held at December 29-31 of 2015), which can be useful to find out when a certain artwork was released in the context of comiket releases.
Thus I'm wonder if it could be possible to add comiket number as a meta tag?
It could either be:

• CXX
• comiket XX (this is what danbooru/gelbooru uses)

where XX = the comiket number

While I understand that Japanese artwork isn't the primary focus of e621 compared to other boorus, given how many comikets there's been I believe it's sufficiently big for it to have tags to easily search up when it was released based on which comiket it was.

Furthermore there is the argument to be made that we can simply use pools for this, I think that the issue with this is that:

• Usually art released at comiket is also released by a certain specific circle (doujin group) which means an additional pool for said circle, this can get quite cumbersome to having to maintain the comiket pool & the specific circle release pool.
• Subjective but generally tags are more searchable than pools, much less work with maintenance and easier for more users to help out.

There might be things I've glossed over or something that went over my head here, but I got suggested to post here to see what people might think about it.

We're generally not supposed to tag the context of an art piece like commission, gift_art, etc. Unless the images themselves reference the comiket event, like a logo? I'm not familiar with these events.

wandering_spaniel said:
We're generally not supposed to tag the context of an art piece like commission, gift_art, etc. Unless the images themselves reference the comiket event, like a logo? I'm not familiar with these events.

In this case it's not "comission/gift art" and more akin to date/year, since it's the first time said art debuts.