PostPost helps you harvest some value out of those you follow on Twitter

PostPost (Postpo.st) helps you do just that. They make it easy to go back and check out your own personal search history, old conversations with your friends, and who RT'd your posts the new school way (where your Twitter name is not present in the tweet). I discovered tweets about my own blog posts and content that I didn't even know had happened and was able to go back and thank some peeps for the link love.
You can also sort through tweets based on the content type in the tweets. For example, you can look only at tweets that contain links to other pages, or filter your tweets to only view those with photos. It's not complex or new in concept but as we all know, any help with reference, context and curation through the mad house that is our Twitter feeds, is always welcome and much appreciated.
My brain lives in data consumption chaos and it's hard to remember much let alone keep track of all of the great content than others shared with me in the past. PostPost has made it a little easier for scatter-brained individuals like myself.
More information
Follow them on Twitter - @PostPosting
Check out their Posterous - http://postposting.posterous.com