title: Using CurrentRoleInstance.Id to run a task in just one instance
body: <p>In a context where you are deploying a web role over multiple instances and require to schedule a task that should be done by one instance only (like sending an email to the site admin with some stats), how reliable is it to use <code>RoleEnvironment.CurrentRoleInstance.Id</code> in order to make the task run on one instance only (like only running it if the Id finishes with <code>IN_0</code>) ?
  If anyone has ever done this, I'd be interested in his feedback.</p>