Allow per-user favoriting of Product wiki Notes

As a company wiki grows larger, it would be nice to favorite, bookmark, or star certain wiki notes.

The closest existing mechanism, watching a note, makes sense when you authored it or need to know when it changes. This proposal focuses more on the desire to flag certain pages as a useful personal reference for yourself.

You can currently view the Pages you're watching by navigating to My Profile > Watching > Product > Notes. However, this view is noisier than what I have in mind and necessarily Product-filtered.

The goal of favoriting a note would be to highlight it in the UI by:

• somehow calling it out in each Product's Notes listing to quickly scan for the pages you care the most about
• showing you've favorited it when viewing a Page to allow easy toggling of favorited status
• adding a cross-Product viewing of favorited notes under your Profile

The cross-Product viewing would make an excellent personalized wiki. In contrast to the watching view it could actually render the notes in-line, and/or with a cross-Product navigation of their hierarchy to the left, similar to the Product-scoped view.

As it makes sense to get notified of changes to notes you use as a personal reference, favoriting should add you as a watcher. However, the desire to take ownership of a page and know when it changes is orthogonal to the desire to reference it easily.