When looking for a top-notch memory foam mattress, beware of reviews. That is, you need to read what people have to say, but not every review is credible. A memory foam mattress review written on a mattress company's own site, for example, might not be as objective as one on a neutral site. And a website that does extensive tests on several types of memory mattress products, posting all the results, might be more reliable than an individual blog that is supposed to be objective, but consistently pushes just one brand.

One place you likely won't find a negative memory foam mattress review will be on a manufacturer's own site. The company might even hire people to post reviews elsewhere, saying their brand is the best memory foam mattress there is. But certain patterns will clue you in to this. Even the greatest mattresses can't please everyone, so there will always be some negatives reviews. But if several mixed comments are suddenly pushed to page two of the review site by a spate of wildly favorable reviews, then that should make you wonder if you're witnessing a company's viral marketing program.

Sites that test different brands of memory foam beds and post results are likely more trustworthy. Consumer Reports does this, and www.consumersearch.com posts reviews from other reputable sources. There are also some individuals, like Geoff Milburn at the www.gmilburn.ca website, who will post a memory foam mattress review and list detailed research results and their conclusions. You might also check sites that cater to people with back or hip problems, because their reviews will be more concerned with their readers' welfare than pushing a company's products. Of course, if any such site is itself sponsored by a memory foam bed manufacturer, then that ought to raise questions.

You may be tempted to abandon the idea of trusting any memory foam mattress review altogether. But fear not, the good ones do exist. As well as trying neutral or consumer research sites, do a web search on specific brand names. Naturally, you'll find reviews from the company's own site, but even negative reviews of a foam mattress memory bed will appear in such a search, despite the seller's viral marketing. With a little exploration, you will still gather enough information to get the best product possible.