This is the constant curse of being Irish. Every time you try to register for a service or an organization, there’s a chance that someone’s awful web form will tell you to change your last name. What’s worse? It likely points to a vulnerability. If your system is telling me about how quotes affect a query it’s the first sign that you might be ready for some SQL injection.
So don’t just make sure your site is Irish friendly to make me happier. Make sure you can’t own the database with some well placed quotes.
And hurry up, it’s 2012.