Your comments

In Asana you can:

  • copy (i.e. duplicate) any task
  • move a task to wherever you want; e.g. to some other project, or even change a task into subtask (or vice versa)!
  • make a task belong to multiple projects (which then can have different team members). This is an extremely handy way to collaborate around a task!

These points are the top reasons why I can't move to Ryver yet!

PS. A thought about privacy: The person moving or sharing a task or post has the responsibility to do so without accidentally making a private conversation or task "public". This needs the same "administrative control sense" as when sharing paper documents or e-mails within an organization. I believe that most people will handle this without any problem.