It's interesting that this has been brought up since I recently had an incident where an "I'll take it" was posted and then nothing, zilch, nada. I lost a sale to the next person because I told him I would wait for 24 hours. The first guy flaked but I had to wait and then lost to the guy that posted seconds because he purchased another knife in the meantime (can't blame him at all). Communication is the key to a good transaction and it only take a few moments. One last rant...how about the folks that never let you know that the knife arrived safely? All it takes is..."I just got the (insert cool toy here)...thanks so much!!!" It's just odd in my book at least...rant off!
You need to put a time limit on how long an 'I'll take it' is good for.
The luxury of using that system, which is a fair one, doesn't mean that you get a day to think about it.
It means, you are ready to buy....
Agreed with your last point.
It's nice when the seller posts it as shipped and the buyer confirms receipt of the item...