Noticed three tags:
6 chad_(gtb) character
10 donnie_(gtb) character
10 jesse_(gtb) character

In these 3 cases the GTB is glitter_trap_boy,
but there are other artists who can acronym to GTB:

193 generalthunderbat artist (GeneralThunderBat)
1 george-the-blob artist (George-The-Blob)
1 gifsthebrony artist (GifsTheBrony)
77 gloomthebat artist (GloomTheBat)

(and maybe 375 gotobeido artist (GoToBeido??) )

is it ok if I (manually) change the '*(gtb)' tags ??

chad_(gtb) -> Chad_(glitter_trap_boy)
donnie_(gtb) -> donnie_(glitter_trap_boy)
jesse_(gtb) -> jesse_(glitter_trap_boy)

+1 owners to characters shouldn't be acronymed.