1> Replay it - To see a term's popularity on Twitter over time, and even 'replay' tweets that include searched query term
2> Google Follow Finder - To get interesting and related suggestions to follow new twitter users by entering your twitter screen name.
Replay it :
Just search a term in Google , then what you need to do is , click on the Show Options link option and then choose Updates. You will then start seeing all the tweets in real time having the search query in a timeline with clean graph .You can drag a cursor back and forth along the timeline to check current year, month, or current 24 hour period and the search results will change to show tweets from that period of time.
For example here is the direct link in which i can see all tweets mentioning me in tweets
Google Follow Finder:
This is like common tools available in plenty to find people to follow . Simply by entering twitter name, hit submit and you get two columns of twitter users.
One is "Tweeps you might like" and the other is "Tweeps with similar followers." This integration is based on Twitter’s new @anywhere frameworks, which make it easy for any site to add Twitter functionality and they too are using this frameworks to provide dynamic information about Twitter accounts and one-click following