99 Essential Twitter Tools and Applications - Smashing Magazine ![rw-book-cover](https://readwise-assets.s3.amazonaws.com/static/images/article2.74d541386bbf.png) 🔗 **Source:** [99 Essential Twitter Tools and Applications - Smashing Magazine](http://www.smashingmagazine.com/2009/03/17/99-essential-twitter-tools-and-applications) ## Highlights - Similar to Twitter Grader, twInfluence lets you calculate the indirect influence of you and your followers on Twitter.