Is anyone actually interested in the (convert) tag? I saw 0 followers, and there are too many data formats to convert from/to for it to make sense to me. For one, why would one assume that a person who is interesting in conversion between video formats would also be interested in conversion between packaging file formats.
There are currently 17 questions with either convert or conversion. These two tags should be synonyms, by the way. All signs point at making conversion the displayed name: Super User has the synonym in this direction; on both U&L and AU
conversion has more uses;
convert could connote ImageMagick's
I don't see this tag as useful to subscribe to. I can sort of see a use case for it being the sole tag on a question: a question about conversion between two really exotic kinds of files, especially by a new user who doesn't have enough reputation to create a new tag. This tag is definitely useful for searches: if you're looking for a way to convert from a to a particular file format,
[format] conversion narrows the search a lot more than just