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Do we need both the tags zip and unzip?
Inspired by this similar post on [SU] and seeing a few posts with the tag unzip (20 uses).
We only had unzip, no unrar, gunzip, bunzip2, etc...
zip could probably use some review for topicality as Michael points out.
I disagree because most of these questions aren't even on-topic. If they are, it's unrelated to the act of zipping/unzipping and instead something else, so the tag isn't even relevant.
Just my two cents.