Can't help but feel this is more suitable in the offtopic board(or the discuss the forums board) rather than the discuss the game board...)
And I suppose that bells could work if your friend also plays ACNL, but how is TBT going to benefit your friend? I was pretty ill in hospital once and as much as I appreciated kindness from friends, a valuta mostly used on a internet forum was little help to me as 1. I didn't have a good connection and 2. I would have been too ill to really enjoy it. Sorry for sounding critical, it just hard to understand why it's so needed.
Maybe open a shop and write in the title+first paragraph what it's for and why?
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Additionally, maybe I'm blind, but the only place you seem to really promote your shop is the shopping section and as far I'm aware, no need to apologise for using it for it's intended purpose?