Lazy Loading - Delay 5 seconds to load the buttons, so that the page will load more faster.
Weight - Sorting, make buttons display in order, where heavy weight will display in higher priority.
1. What's Ajax Floating?
Make the buttons show at the left side of the post or page, scroll down as the people read the post, Mashable.com scrolling effect cloned.
2. How to configurate it?
Due to the different theme layout design, high chance the pre-defined settings are not suitable. So, you have to configure the initial position and scolling position.
--- Initial Position ---
This is the position where the buttons initial display, try change the default "margin-left" value to suit your theme.
--- Scrolling Position ---
This is position where the buttons display while you scrolling the page, try change the default "marginLeft" value to suit your theme.