How can one person texting ruin ANYTHING? I hate it when people say that. People who text are being courteous enough not to gab on their phones, which would REALLY disturb people. Like seriously, was the spotlight on Madonna? Was she texting onstage? If not, then I don't see how it should matter. Focus on your craft and give people a reason to pay attention then. If they're distracted its because they found something more entertaining to hold their attention than YOU.