Alan. Have you seen the latest Centrallo announcements? The shared lists is definitely worth checking out. Also, they use GeoTrust SSL and will be offering list encryption within the next 60-days.
From their release:
Last week, we released our most highly requested feature – shared checklists where multiple people can add and edit in real-time. In addition, we significantly updated our web version and made other improvements across our iPhone, iPad and Android versions, including the ability to publish lists containing rich media - a differentiator. Here’s an example of a published list that shows some of our key features.
Centrallo
Centrallo is a cloud-based, cross-platform personal productivity tool that helps people centralize, organize, prioritize and share their lives. Think Dropbox, but for Lists – with unlimited list levels and the ability to share at any level. Our hierarchal structure is a big differentiator from our two largest competitors, Evernote and OneNote.
Feedback
“I’ve tried many other apps and Centrallo, by far, is the best one out there. I’m a consultant–so I have lists for each of those jobs, I also coach sports teams–separate lists for those teams, 4 kids in 3 school–more lists, and have a Command Central for my to do catchall. So you see, a well-thought our organizational app is critical.”
“A few months ago I stopped using Evernote and focused on Centrallo and never looked back. I'm not sorry!”
Press
Organize Your Life with Centrallo – 4.3 stars
Looking for an Evernote alternative? Centrallo might be what you’re looking for
Video