These are unofficial (ie: illegal) DVDs which contain recordings which are not, and have never been, officially available for sale on DVD. They often contain material that has previously been available on video but has not yet had a DVD release and are more commonly old TV series rather than films. There is a large collectors' market for bootlegs as they contain material which has never been legally released so can be very attractive to anyone trying to get hold of some TV programme from their dim and distant past. A lot of buyers are happy to buy bootlegs as there is no legal way of obtaining the material on them so opinion is divided as to whether they do any harm. Obviously, with more and more old TV series being given official DVD releases, the demand for a certain bootleg title can vanish overnight. Recent examples of this include Adam Faith's Budgie TV series and kids' series, Grange Hill. However, it's still illegal and in breach of eBay rules so eBay are constantly removing any listings which are reported to them that offer bootlegs for sale. Ebay has it's own VeRO (Verified Rights Owner) programme which film companies can join - you can view a list of some VeRO members in the Movies, Television & Radio category and check out their individual policies. There will always be bootlegs on eBay though as there are so many offered for sale that they can never all be removed at any given time. So, how to spot them? The seller is hardly going to spread the word "bootleg" liberally through their title and description.