Usage

Using the Profile Actions widget, a link for subscribing to various objects can be created. This button or link can then be placed in the following locations to:

On the profile configuration section (config.section.profile): subscribe to user updates
On the article configuration section: subscribe to updates on an article (content type)
On a section configuration page: subscribe to a sections updates
On the search configuration page: subscribe to new elements being tagged with a specific tag

NOTE: these buttons will not show up until the page is viewed as a logged in user