just saw one. is that even allowed?
not sure if this thread belongs here so feel free to move it
I don't think auctions without an end date are not allowed. They are allowed and should be, the seller has the right to stretch the auction till he feels that's no more people are interested(this happens only when people are not in a hurry to sell their product and if someone needs to sell the thing fast then he can set an end date). It all depends on the person who is auctioning and so AFAIk this isn't against the forum rules.
An Auction is something that is supposed to end in a time. If you think about the real world auctions, then they do the going once going twice...thing. They don't just say going once...you have won the auction, but we will hold onto the product till we get a better offer.
Without the time it seems it would only be a sale, where the seller is taking up offers, and selling it to the highest one.