I'm wondering if you all include packing slips, invoices, or whatever in with your shipments. I do, but I'm noticing an increasing number of sellers here and on other venues who don't. And it annoys me tremendously.
When I do a lot of buying in spurts from different sellers I like to put away the items, once received, and put packing slips in a pile to do feedback all at once. That way I remember who sold me what (my memory isn't always good). But in the last week I've received about 15 items and only 1/3 to 1/2 included a packing slip. I pointed that out to a seller elsewhere and she put me on her 'bad' list (I can't buy from her anymore) which kills me because her items are perfect for my purposes.
anyway, I implore you to please include packing slips with your items. It helps your buyers--really.