I would maybe just make a feed for Google Reader with a few keywords and hashtags.
Keyword:
http://search.twitter.com/search.atom?q=YOURKEYWORDS
(replacing YOURKEWORDS with what you want to search for)
Hashtag:
http://search.twitter.com/search.atom?q=%23hashtag
(replacing hashtag with the word/phrase you want to search as a hashtag)
Copy/Paste the URL into Google Reader. Rinse, repeat.