First Question: The first bit of exchange is always through ebay... When the seller gets the email, he or she can opt to respond through ebay's message system or respond via normal email. The message will be sent to the sellers email address from ebay and if he/she clicks respond, it will then respond to the buyers regular email. Did I explain thatunderstandably, because I kind of felt likeit was starting to getconfusing.
Second Question: I have always used Internet Explorer for eBay and Paypal and have never had a problem with either.
Third Question: I have sold many car parts, misc collectables, andsome random"junk". I have been an eBayer for 2 years and 7 months.