While still new, VisibleTweets allows you to enter a hashtag or search term and see search results in a too simple visualizer. While I liked all the flash goodiness, more per screen and a faster load would have been nice.
You are able to view the search in three forms:
- letter by letter replacement
- tag cloud
I found the tag cloud to be most beneficial showing me the most utilized words in tweets that are pulled baced on my search. This allows me to modify my search ton include or exclude terms to strengthen my search.