One of the side effects of testing is you develop a distrust of most software products, especially web sites. It’s a bit like the critic who can never really enjoy a show because he can never snap out of “review mode”. So it’s with some trepidation that I ever enter any punctuation marks into search fields, especially that most-abused of marks the apostrophe. Combine that with the fact that conscientious developers should always escape/strip quotation marks when passing user input to a query and you get this:

http://www.myvouchercodes.co.uk/code-store-search/domino’s