is there any work in progress for standardizing tags and reducing redundancy? for instance, there are 7000 posts for huge_breasts, and 6000 for large_breasts; 63500 for breasts, and 2500 for breast

thats just the most obvious example for redundancy.

Don't forget bb. No work in progress. I believe the "bb" tag should be used for huge_breasts, large_breasts and holy_fucking_hell_gigantic_whale_breasts. If the breasts are larger than their head, it gets the bb tag, otherwise just breasts. Feel free to request the aliases on the alias page and I'll have them approved when possible.

I don't think huge and large have actually the very same meaning... as for breast vs breasts, well there might be pics where you can see only one ? OK, maybe the word 'breast' isn't the best for this kind of things, but then, let's take another example : there are (indeed) some pics where you can see only one nipple while on other you see both from a same character. So what I'm trying to say here is be careful with singular / plural consolidations. It's nice too to have precise enough tags sometimes.

We should probably implement implications then. The more precise the word, the more likely it will be implied as another tag, so it would be added if not already there.

Just as with hair colour, age and so on, it is important to discriminate between breast sizes.

How about:

Counting:
single_breast
breasts
multiple_breast_pairs (possibly redundant [other tags can cover the existence of multiple females in an image])

Size
Simplified system:
micromammaries
mammaries
megamammaries

or
Vernacular-dependent objective-aligned hitherto subjective terms:
flat_chest
small_breasts
breasts
large_breasts
huge_breasts
absurd_breasts

large_breasts would be larger than is considered normal. A subjective measure, admittedly.
huge_breasts would be larger that the cranium size, starting to get a little crazy.
absurd_breasts would be ones that are about the size of the person who possesses them.

I don't know. I think I'm beginning to smell sights. Fuckin' photons up in my nose what the fuck.