This advert's interesting because of the subtle use of bold in the web address. It's easy to separate www.kateatkinson.co.uk into its component parts:
www
kate
atkinson
co
uk
With www.kateatkinson.co.uk (the unbolded version), the task is much harder and a reader may well come up with (for example):
www
kat
eat
kinson
co
uk
(Kate Atkinson is an English novelist; I think this advert was promoting her latest novel, When Will There be Good News?.)
