As much as I love getting notified about new users following me on Twitter, at the same time I hate the fact that Twitter never alerts me about the jerks who decide to 'unfollow' me for some reason (honestly! no offense).
Users may decide to drop you off from their list of 'interesting people to follow' if you do not update your status regularly or post on controversial issues more often. While in some cases knowing who 'unfollowed' you isn't important, it is still a very valuable piece of information otherwise.
Qwitter here makes sure that you never lose a track of all the morons who, for some reason, end up 'unfollowing' you on Twitter. It notifies you through email as soon as a user drops you off their 'following' list.
Another service that serves the same purpose is Twitterless. It provides more detailed statistics about your followers on Twitter and also notifies you as soon as someone unfollows you. The only downside is that the service is invitation based. Follow @tless on Twitter to get your free invitation to use the service.
Pingback: Get Notified When You Are Unfollowed On Twitter with Qwitter | Walyou