I use Twitter as an unfiltered filter of content on the internet. It provides direct access to some incredible people as they share both their thoughts, and things they are reading. By limiting the number of characters, each tweet can be screened quickly to find things of interest. Links can then take you through to longer reads. By looking at who people I find interesting are following, and who is following them, I am able to find an 'infinite library' of fascinating people engaged in conversation. It doesn't take time from me. It helps me focus my time.
My handle on Twitter is @ trevorblack