Top 10 lists are sure fire way to get some on-line coverage and chatter, so I will further reinforce that by referencing this "Top Ten Reasons Why On-Demand Services Will Soar in 2008" from consulting firm THINKStrategies.  You can read the entire write up via the link but I thought #9 was particularly relevant to what we are doing at Hubspan and the value we provide:

9. IT Discovers Services are the Solution: In the past, the IT
department was the biggest barrier to managed services and SaaS
adoption. Many IT professionals were afraid these on-demand solutions
would eliminate their jobs. Now, a growing proportion of IT people see
managed services and SaaS as a way to out-task mundane work or overcome
complex application/technology deployment and maintenance
responsibilities. As they learn to take advantage of these on-demand
solutions, IT departments will finally be able to put their daily
firefights aside and focus on addressing the strategic needs of their
business users.