This could be pretty cool. There are times when I search for something that happened recently (say, 20 minutes ago in a live sports game, or if I see 6 police cars blocking off the street out my window) and google has no record of it, or sometimes the news tab stories are now wrong/obsolete. In these cases I'd love to see twitter results, particularly from "trusted" sources like reporters or news orgs or even just from popular sources.

(Presumably Google could work out this deal now without buying twitter. But it could be a benefit, similar to how the videos tab is mostly YouTube).