I have two questions, one about new stuff and one about game feature. 1) What is Seal of Corrupted Soul used for? 2) Does nobody use the Auctioneer NPC to sell/buy stuff? Follow up on #2: If not, why?
I don't use auctioneer to sell stuff because it takes a percentage of the selling price and there's still a limit to the number of items you can sell (I think these limitations are waived if you're premium but I don't buy premium so idk.). So if you're going to spend time in game, and you usually would to get the in game freebies from stamp, you might as well open a stand and sell stuff there. But I do browse auctions for items, you can sometimes find bargains there.