Data aggregators and directories are important roles in the ecosystem. There is so much data out there, that it's hard to keep up with what is available. Additionally, you want to ensure that the data feeds you want can be integrated with your existing data with minimal effort.
Comic Relief's success lies in its canny combination of entertainment and fundraising. Great entertainment from upcoming or much loved personalities has proved itself a potent counterpoint to the emotional, heart-tugging films about the issues.