It is already obligatory for some time to warn the visitors of a web site that cookies are used.
Now Remark Webdesign also fulfills this obligation!

Although this cookie warning is considered a nuisance by many (and rightfully so) still the obligation remains. Now this site also has such a warning. Luckily it is one time only, less invasive and revocable (through the small link just above the menu) so few will take offense to this warning.

It also shows that Remark Webdesign can provide your site with such a warning. The real lay-out (the way the warning is shown) can be adapted to your need and idea.