In a thread now closed (http://www.rememberthemilk.com/forums/iphone/6322/) Emily wrote that the iPhone "communicates with our servers using a secure HTTPS connection to transfer both login details and tasks data (this isn't optional; it's always encrypted)."

Two follow-ups:

1. Is that true even if you are connected over 3G instead of WiFi?

2. Is it true if you are using an app other RTM on the iPhone to link to your RTM acccount (i.e., Appigo's ToDo or Milpon).