Ever since forum #130116, I've been thinking of drafting up some kind of wiki about needlessly overtagging everything (henceforth called superfluous tagging) and figuring out what guidelines would be written in the wiki to determine what's good tagging vs. bag tagging. Although undertagging is often discouraged, lately I've been noticing that overtagging is starting to become an issue, and I hope such a wiki could help guide users on what's not necessary to tag.
For instance, I updated post #2715867 to remove tags such as blue_tank_top, horizontal-striped_tank_top, and multicolored_tank_top. All that's really needed are tank_top, blue_shirt, and horizontal_stripes to get the same search results. It's tags like the first three that become so ridiculously specific that it's hard to imagine anyone searching for those, when it's more likely for users to search for the more general tags that the latter three represent.
Maybe such a wiki isn't necessary, but I would like to see something that could help us reach an agreeable middle ground when it comes to tagging.
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