EGBTicker stands for Ebay Gold Bullion Ticker.
It more or less consists of three parts:
It queries the Ebay servers for two things. It gets the most recent completed auction of anything that very closely resembles a 1oz Krugerrand. It also gets the soonest ending (up to 20 auctions) of anything that very closely resembles a 1oz Krugerrand. It filters out foreign sales, it filters for sales only in USD, and it tries very hard to tell if the auctioneer is selling multiple coins or not. It does its best to exclude replicas, bezels, and other kitsch and crap that don't matter.
It displays the most recent completed auction in some tray icons and displays the upcoming auctions in a window that consists of a table-like thing. You can double click on the rows in the table and it will take you to the actual auction of the coin(s).