When we are hunting for information, recency is relevant.
Google is already working with Twitter to include real-time results, but I'm curious to see where they place it. Seeing tweets inline will be what the user looks at first. People always want to know what's going on right now.
Bing is playing ball with Twitter as well, and they already have a better visual design.
But I want Google to implement this on their production servers now. What are they waiting for?