Thanks for the clear example, although there were already perfectly clear examples earlier in the thread. I think you and I just have to accept there are some people here who simply don't understand how a proxy bidding system works (even though ebid is just like feeBay and many other internet auction sites) and their goldfish attention span prevents them from taking in your information and correcting their impression.
Don't worry. I made that sentence long enough that they won't realise I'm insulting them!
Admittedly there may be some varieties of auction where bid reduction would be inappropriate. I don't use Dutch auctions or multiple items etc, so I've not bothered to think about them. But for the usual plain auction with proxy bidding, bid reduction doesn't harm anyone. If 39 postings haven't already convinced people of that then they should stop using auction sites!