Can you cache contact images in your app? (I'm assuming the app doesn't already do this. I loaded RTM for Windows and when I tried assigning a user to a task, only their cow head RTM icon appeared.)

Maybe add logic to have the app cache user avatars if an organization has less than five users, maybe? #ideas

If this suggestion already exists, let me know. I couldn't find one after searching for people/contact portrait/avatar image. ;p