Shall we keep it? Because if yes, I’d suggest to use it on all conventions and standardise the con tags like so:
General con names: “convention:<con name>” where <con name> isn’t abbreviated unless the abbreviation is the official name (like B.U.C.K.). Of course there should be only one tag for each con.
Specific con by year: “convention:<con name> <year>” with a blank space where <con name> is the official name as used in “convention:<con name>”. It should always imply “convention:<con name>” and the year.
When a con name is often abbreviated (again, the abbreviation is not the official name, i.e. EQLA, EFNW), “convention:<abbreviation>” should be an alias for “convention:<con name>”.
All existing variants of “<con name>” should be aliased to the single “convention:<con name>”.
We could use this thread to collect conventions to be retagged.
For starters, BronyCon (which probably has the most tags of all):
Normally we do this for things that may overlap with normal words, like spoilers (which fulfill a different purpose than the thing they refer to) and comics & characters (which often have common phrase names).
Convention names however are generally unique, so I don’t see what benefit this would provide.