Twitter is a waste of time.
Or, is it a an efficient tool for public relations?
Blogger and copywriter Bob Bly has created a crude metric for measuring whether Twitter is getting you results or just wasting your time—it is called Followed-to-Follow (FF) Ratio.
Check it out:
http://bly.com/blog/online-marketing/a-new-metric-for-measuring-twitter-roi/
John Bradley Jackson