The white background standard required by major online advertisers might make sense for your own website or print promotions, but in case you're interested in something more creative, consider:
If you're in the market for a product photographer just now, be sure to scroll down for some things to think about that you might not have considered:
Most of our product shoots happen at the client's place of business, preferably with a company facilitator of some kind nearby for questions, as well as to see the pains we take to get great captures. Shot lists are important on especially larger projects, and we routinely ask to see the web page(s) where the finished images will appear to assure continuity (angle, lighting, etc.).
Watch out for "one use" licensing of the photos (we give full copyright). Also ask about the size (pixels wide x pixels high) of the finished images you'll be given. You may want the full-sized versions (typically over 3000 pixels on the long side) for print use some day. Finally, if your photographer shows up for a product shoot without at least a tripod and light set, politely ask him or her to leave.
Our product photos involve two steps: Capture and post-processing. We may in rare cases edit shots provided by the client - eg. photos of past projects or business history shots - but we don't sell un-edited photos. When editing for use on Amazon, QVC, etc., we routinely select and cut out your product, which is why we can guarantee 100% pure white backgrounds. Once an image is selected, slipping a white background behind it is a snap. It's also just as easy to put another photo back there as well, whether to create a composite of your product shots, or to use a "stock" photo background (see the slideshow above). When subjects are cut out for white backgrounds, we're happy to provide the transparent (.png) version along with the JPEG at no extra charge. Stock photos can usually be licensed from one of the stock sites (eg. canstockphoto.com) for under about $20.00.