Tags make people feel special about doing stuff, like achievements for opening your inventory or making a stone pickaxe. It's a good thing. But if it's a hassel, not important enough to deal with unless you make people do the work for you by posting in a sticky thread after 6 months.
"Blah blah blah, join date ect ect ect. Can I have vet tag nao?"
"Blah blah blah, join date ect ect ect. Can I have vet tag nao?"