Most large organizations have fairly mature data warehouse/business intelligence (DW/BI) systems in place, and many of these have met with some measure of success. Unfortunately, in this "what have you done for me lately" world, success is not a single event you can gloat about as you kick back with your feet on the desk. Continued success is a constant process of building and maintaining a solid understanding of the value and purpose of the DW/BI system across the organization. We call this education, but many of the techniques involve marketing and organizational strategies. Call it what you will, you must actively and constantly promote the DW/BI system. First, you need to know who your stakeholders are and make sure you have standard communications tools in place, like status notes, newsletters and quantitative usage reports. There are also a few qualitative and organizational tools you can use to educate management about the value and purpose of the DW/BI system.
Source: Intelligent Enterprise, http://www.intelligententerprise.com