Is it possible to print the contents (i.e. list of tasks) in a project list from an iPhone? Currently I don't see how to do this, but it would be useful.
Unfortunately there are no options currently available within Todoist that allows this. We will consider adding this in the future. Feel free to add it to our Votebox: http://todoist.com/Vote_iOS/
Please note, there may be other apps available for iOS that will allow printing pages from apps, though I am not aware of any.