I just noticed that we have an alternate-world tag. I perused the (7) questions using it and noticed that most of them really didn't have much to do with alternate worlds. They all would be perfectly identifiable with only the other tags they used. Does anyone else think that these questions poorly use the tag, or that we don't need the tag at all?
We already have an earth-like tag that functions to define worlds as earth like in all ways except those specified in the question.
As defined alternate-world is redundant, and less descriptive in it's meaning. Alternate can mean totally unlike Earth or like Earth (just the English definitions I mean, the meaning is well spelled out in the tag definition)