Chinese sellers have been very pleasant to deal with IME, including obviously hand-written niceties, handwritten thank you notes (maybe not in the best English

Chinese sellers have been very pleasant to deal with IME, including obviously hand-written niceties, handwritten thank you notes (maybe not in the best English but the sentiment is there) for a bunch of stuff. Occasionally small 'gift' items, have gotten Chinese fun-size snacks too. There are US sellers that have resulted in 27+ emails _within one day of purchase_, one seller has managed to sign my ebay_a10f9@ alias up for five separate companies reselling third party warranties / affiliate spam for the above. What the fuck?