Check out the screencast for a demonstration and explanation of features and settings. The first couple minutes shows the module in action, followed by a deeper explanation of configuration options
Add, remove, and reorder nodes or blocks to a page without leaving or reloading the page or using editors
Content added to hotblocks can be constrained to individual pages or be made global to display on all pages that contain the hotblock
Can display multiple instances of the same block or node in multiple regions
Can give end users the ability to add and remove blocks to pages without exposing the administer blocks permission
Provides a means to filter which of those blocks are available to the user for adding so every block in the system is not exposed
See an overview and administer all of your assigned hotblock content grouped by region, url, or taxonomy on a single page
Allow users to add and remove content to a page without giving them permission to edit that content
Advanced permissioning possible - allows you to control which roles can assign/remove/reorder each type of content to every hotblock individually if necessary
You can use your own custom icon set for the UI controls to customize look and feel
If you don't like the term "hotblock" you can customize the terminology exposed to the user to suit your purposes