Although automated customer support is common on the web, this is the first time I've seen it integrated with eBay.
It's a pretty simple proposition: when a prospective (or current) buyer asks you a question through eBay the ezSupport system kicks into action and attempts to automatically answer from a library of questions and answers that you have built up yourself.
If it can't find a matching answer, it lets the sender know that their question is being dealt with, and puts it in your stack to answer manually.
At first glance, it looks like hard work building up a knowledge base, but this can be done as you go along answering questions. In other words, you can do what you would have to do anyway but gain the big benefit of your answers being automatically reused the next time a similar query comes in.
I know sellers who no longer answer questions from prospective bidders, on the basis that the time spent does not pay off with higher bids. With a system like this, that time gets less and less, and the return on investment grows.
The interface is simple and has a step-by-step wizard available following sign up.
ezSupport for eBay is very reasonably priced, and has the potential to save even small-volume sellers a huge amount of time.