Prevent other sellers from stealing your photos.
Taking a good-quality photo of each and every item being sold can be extraordinarily time consuming, not to mention practically impossible for items still in their boxes or not in the seller's immediate possession. As a result, many sellers resort to hijacking other sellers' photos for use in their own auctions.
The problem is that photo theft can be extremely damaging, and not so much because of mere copyright law (although it does apply).
A big part of any auction's desirability is its uniqueness. The more uncommon an item appears to bidders, the more valuable it becomes. When bidders see the same exact photo in two different auctions, not only are the implied scarcity and value of the item severely weakened, but the integrity of both sellers becomes suspect. And unless it's painfully obvious, most bidders won't distinguish between the thief and the seller whose photos were pilfered; a single theft of an image will hurt both sellers.
My inspiration for this solution was a hot-dog vendor in my college town. On a shelf next to the broiler sat an old black-and-white television set, with the words "Stolen from Top Dog" written in permanent marker on its side.
The idea is to mark your photos so that they're unusable by other sellers, but in a way that doesn't adversely affect your own auctions. This is accomplished quite simply with a bit of text superimposed right on your photos.
The text should be carefully placed so that it doesn't obscure the subject but also can't be easily removed by the thief (such as with the clone tool in [Hack #57]). Often the easiest way to do this is with large, translucent text right over the center of the image, as in Figure 5-7.
The specific text you use is up to you, but it should include a copyright symbol (©) and your eBay user ID. The user ID is important, as it indicates that the photo belongs in your auction and no one else's.
The right mouse button is what most people use if they want to save an image on a web page. If you want to take an aggressive stance on image theft, you can disable your customers' right mouse buttons for your auction photos. Just include this code somewhere in your auction description:
 Based on code snippets by Martin Webb (www.irt.org).
Here's how it works. The lockout function sets two rules for the page: any time a user clicks an image on the page, the norightclick function is run , and any time a user opens a context menu on an image, the nocontextmenu function is run . Later on, the <body> tag  calls the lockout function only when the page has completely loaded, otherwise, the for loop would miss any images that haven't yet finished loading.
The norightclick function then blocks the right click with a warning message , but only for Netscape and Mozilla browsers. The nocontextmenu function disables the context menu with no warning , but only for Internet Explorer. The two browsers are handled differently because only Internet Explorer supports the oncontextmenu event. (And, to cover all our bases, there's a bit of code to handle older versions of Netscape .)
Here are a few other ways to protect your images from being stolen:
If you're hosting your own photos, take them down right after your auctions close to reduce the window during which other sellers might find and steal your images. But this could arouse the suspicions of your winning bidder, and would weaken the marketing power of any photos in your completed auctions that might otherwise help drive bidders to your current items.
If you're really concerned about image copyright, you can use CopySafe Pro (available at www.artistscope.com), a Java-enabled image viewer. It may be overkill for simple auction photos and it's not foolproof, but it may be the additional security you're looking for.
Some image editors, like Photoshop, support invisible watermarking, a method by which images can be marked and later identified for copyright infringement. Image thieves won't ever know it's there, but it can be useful for proving that theft has taken place.
The most effective means of protecting your images is to simply report any auctions in which another seller has used one of your images without permission.
To report an auction, go to pages.ebay.com/help/basics/select-RS.html. On the Rules & Safety Support page, select Questionable Content on eBay Potentially Infringing Issues Use of Images, Text or Links without Proper Permission. Click Continue and then click Contact Support on the next page. Finally, specify the offending item number(s) in the first box and explain the offense in the second box. Be sure to include the item number of your original auction in the second box to show that it was you who posted the image first.
eBay typically takes 2-3 days to investigate and respond to claims. In the case of content theft, eBay will simply remove the offending auction and explain the situation to the seller (assuming you've sufficiently proven your case).