One of my former students has emailed me with some questions about an assignment. So to be fair I will publish my answers for all to see in this blog. You can select more to see the questions and answers, I also would love to have more questions on this subject in the comments...

 

This one is dedicated to my brother Paul who will doubtless delight in this clip:

I am just reading an article by Bill Thompson of the BBC:

"Unfortunately, however, like many other communities that seem to be happy and relaxed but are in turmoil just beneath the surface, eBay is more like the fictional murder-prone village of Midsomer than the perfect market." 

I loved that line. Apparently sellers will no longer be able to leave negative feedback for buyers, I am not sure if this is a good idea.