Maybe some of these do exist but I haven't been around long enough to find them?
  1. Guy who thinks no one can see his lists
    Mostly publishes grocery lists, embarrassing to-do lists, and lists of possible reasons his wife could be mad at him. Has no idea that other people can read said lists.
  2. Cat that makes Mischief Managed lists
    Cat listing all the horrid things he has done around the house. Often features hapless owner who believes cat can do no wrong and unfortunate dog who gets blamed for said mischief.
  3. Teacher venting how she REALLY feels about the sweet children in front of her.
    Suggested by @reconditioner
  4. The waiter/retail employee listing about their "adventures" dealing with the public.
    Suggested by @Starmist