Should tags use abbreviations where they are common?
For example I was thinking of tagging the Banded Iron Formation question "BIF" but thought that might be a bit obscure. On the other hand, banded-iron-formation is a long tag. Similarly MORB is a generally accepted acronym where the parent is long winded (mid-ocean-ridge-basalt).
I notice we have some meteorology abbreviations creeping in the tags. Not being a meteorologist, these are a foreign language. I'm sure the meteorologists think the same of BIF and MORB!
I think this is a good case for tag synonyms, but which should we prefer?