The most obvious place to promote your eBay auctions is on eBay itself. Once you have a potential customer interested in one thing you're selling, why not show them what else you have for sale? You'd be surprised how many customers can turn into purchasers of multiple items—and those extra sales are especially profitable.
eBay helps you cross-sell in this fashion by including a View Seller's Other Auctions link at the top of all item listing pages, as shown in Figure 24.1. This links to a page, like the one in Figure 24.2, that lists all your current auctions.