When you delete items from your inventory they are placed around your character on the ground in circles. It looks beautiful when you throw out lots of enchanted weapons and armor pieces :) One day I threw out about 30 pieces of zombie meat, or something and after closing inventory my character was standing in the middle of two redish circles made of that meat :) I was amazed! It looked like some kind of magical ring :)
I used to collect all the loot in my saddlebags and after they became full I'd go to a merchant and sell the stuff while seating on my horse. I'd press F2 (for inventory), put as much as I could from my saddlebags to my characters inventory, then I'd close it, press Space (opening trading window, which actually looks the same way as the regular inventory window), sell all that stuff, and repeat all procedure. The other day I made a mistake and pressed Space first, instead of F2, and accidentally bought stuff for like 100k :) Later I thought there was a bug that made my gold disappear :)