Haha, we never thought about is this way ;) TeamTab is restricted to collaboration within a team and has no feed feature (the main view is a compact user list).
Thanks everyone for your encouraging feedback! We've processed (most of) the bugs + typos, and realized a quick video to showcase Castor (https://www.youtube.com/watch?v=KLqvLqeNI9M).
We're also working on public dashboards (ie. share your dashboard with anyone/any device without the need to login) and that feature should be shipped in the next few hours.