Companies want to know what their customers or potential customers are saying about them and their competitors. Social media offers the fastest, and arguably the most accurate, method to discover who hates you or likes you, and who loves the company but despises the product.
The Semantic Web allows us to invest our brain power in responsibilities and tasks that require alert human cognition -- and give the tedious line checking and data grabbing to a machine who doesn't talk back, get grumpy or demand coffee.
We have five more years to make good on the specific Millennium Declaration promise, but we have a lifetime to care for our fellow citizens of the world. Watch, connect, spread the information, and speak up.