Common sense, and the laws of physics, tell us that "there's no such thing as a free lunch". Nevertheless, there is such a thing as a bargain and savvy porn surfers know a good deal when they see one......and this one's worth knowing about!

One clever adult site has come up with a novel idea to make membership to porn sites just that little bit cheaper - and it's all perfectly legitimate and has the approval of the porn sites involved.

OK - so how does it work? You may or may not know that when you sign up to an adult site - after clicking on a banner on a free site, for example - that the owner of the free site gets a percentage of your subscription as a commission. This can be anything up to 50% of the subscription fee. This makes absolutely no difference to how much you pay because the fee is the same whether you join the site directly or via the free site.

What XXXCashBack have hit upon is that they can pay back some of their commission to the surfer if, and only if, they join a site via XXXCashBack.com.

Hey! This looks like a win-win situation for everyone. And indeed it is - as long as there is a good selection of best quality sites to join via XXXCashBack.

Well, we've listed the current range of categories available in the screenshot (left) and these will certainly grow as the idea catches on. Remember this is a very new concept but so far XXXCashBack have attracted some big name porn sites like 1-By-Day, MET Art and Hairy ATKingdom.

So what's the catch? None, as far as we can see. XXXCashBack is completely free-to-access, so you can see all the sites available. You have to join to take advantage of the cash back offers of course but this is completely free also. As with any adult site we would recommend that you check over the site carefully and read the FAQ section thoroughly before you join.

What you get back. If you sign up to XXXCashBack and purchase a subscription to any porn site in their listings they will pass back to you 33% of the commission they receive from the sale - minus any money transfer fees.

You've really got nothing to lose. If you find a site you would have joined anyway, do yourself a favor, and get some money back.

If you're already a member of a site you like, there's nothing to stop you allowing your existing subscription to expire and sign up again via XXXCashBack. The savings on long term subscriptions could be significant.