If your business users aren't demanding mashups now, they will in the near future. Why? Because mashup tools enable your business users to quickly create ad hoc Web applications that "mash" together data from multiple sources to create an entirely new perspective on information. Mashups will empower your business users, but they'll lead to pandemonium if these users get in over their heads. Avoid this fate by planning how you'll support enterprise mashups in your shop.