Realtime Twitter Search Results on Google
While I am not sure if Twitter poses a threat to Google, I think it is clear that real-time search is increasingly important. And you can be sure that Google knows it. Will Google try to acquire Twitter, or take some other approach? Time will tell, but rather that wait, I decided to get realtime twitter search results on Google today. I created a Greasemonkey user script that does exactly this. It displays the most recent 5 tweets for the query that you are search for, giving both real-time Twitter search results and Google results on the same page:

I have been using it for a few days now and I think it really adds some freshness to Google search results pages. Not only do you get the web pages that have been indexed by Google, but also relevant twitter conversations that are happening right now. One day I think we may see Google release something like this, but until then there is the Twitter Search Results on Google Greasemonkey script.
Get realtime Twitter results on your Google searches:
- If you don’t already have it, install the Greasemonkey add-on for Firefox.
- Click the “Install” button on the “Twitter Search Results on Google” page on userscripts.org.
source :: mt-hacks

