Going to be honest. If a seller contacted me after I bought an item, but the item hadn't been dispatched, I'd question their intentions. If I got a message about what rating I intended on giving that seller before the item was even shipped, I'd question their intentions. If I got a message about my preferred method of shipping, I'd think it was odd, but it wouldn't make me question their intentions.
I think palmer6strings should be made feel comfortable about talking such things, on this site. Doesn't the site already cater to multiple threads that relate to ebay, craigslist, and the strange things that sellers do? Condoning this thread and allowing such threads as "Help me teach someone a lesson", seems a bit ridiculous to be honest.