This excerpt taken from the WBMD 10-K filed Mar 16, 2006.
Developing and implementing new or updated products and services may take longer and cost more than expected
We rely on a combination of internal development, strategic relationships, licensing and acquisitions to develop our products and services. The cost of developing new healthcare information services and technology solutions is inherently difficult to estimate. Our development and implementation of proposed products and services may take longer than originally expected, require more testing than originally anticipated and require the acquisition of additional personnel and other resources. If we are unable to develop new or updated products and services on a timely basis and implement them without significant disruptions to the existing systems and processes of our customers, we may lose potential sales and harm our relationships with current or potential customers.