Aliasing disidi -> gasmask_(artist).

Reason: gasmask is the old name, disidi is the new one.
There are already a bunch of posts tagged with the old name, so it makes sense to keep it.

If the name is the new one he's using it might be better to go the other way around.
That way if someone finds him here and likes him they'll be able to find him easily.

Hammie said:
If the name is the new one he's using it might be better to go the other way around.
That way if someone finds him here and likes him they'll be able to find him easily.

Does that mean every time an artist changes his name, we have to change the artist tag on all of his pics?

Depends, if the new name starts getting tagged frequently, and an alias is needed then we should alias the direction of the new name.
Since we're already doing an alias, might as well go with the newest name so it's easy for people to find.