Whats the best way of linking/synchronising view models in Knockout?

Question

If you have several view models on one page, how do you ensure that you can keep them synced? For example, if one item is added or a button clicked on one view model and you

Answer 1

I have created a small extension to solve this problem for a recent project of mine. Slightly similar in methodology, but adds subscriptions to the published observable directly, and will queue up subscribers if declared prior to the declaration of a published observable.

Knockout PubSub