Ecommerce Test

Today, just had the ecommerce mid term test. It is not totally well done. I can't remember what is reverse auction because it was not prominently mentioned as a main example in the lecture. The only thing I got correct is that it is descending bidding price auction. And it is not buyers bidding for an item but many sellers bidding their services to the buyer of the service and the winner is the lowest successful bid for the seller. The other questions are okie, but I may have been wrong for industry value chains and film value chains or web. For search engine marketing, I can't remember the 2nd method used which is URL. I put another answer for the search engine marketing.