Twitter may randomly unfollow people you're following
henry0
11:58 am on Mar 29, 2012 (gmt 0)
Excerpt from TC
Twitter may be arbitrarily, randomly, and haphazardly, unfollowing people you fully intended to follow. Similarly, if you’ve ever noticed your friends and contacts unfollowed you, it may have caused a sense of confusion, dread, or self-insecurity.