Using Twitter-friends.com, you can easily find out which of your followers “never” use Twitter. You can unfollow those inactive followers and it makes sense, they are probably not twittering all that much anyways. Simply log-in to Twitter-friends.com and click on “Inactive” tab to see which of your followers are the most inactive.
My goal was to unfollow anybody who hadn’t updated in x days. I decided that 30 days was a reasonable number. If you haven’t updated in a month, chances are that account has been abandoned, or you’ve been forced to leave Twitter for other reasons.
I also felt this period covered me for folk who were on holiday, moving home, or away from Twitter for some reason beyond their control but would return in the future.
