Designed over the space of a few hours, this is a simple one-function site to calculate a person's Body Mass Index, based on their weight and height.
The site allows a user to enter their weight and height in several different units, rather than having to find a calculator that handles the ones they are used to using. For example, you are able to enter your weight in metric but your height in imperial.
The .me.uk domain is not ideal for search engines, but it's the last of the cheap-enough-to-throw-away types and it does have the benefit of being a .uk domain as well, albeit the poor relation.