This plugin is based on the plugin spoiler-bar. It allows the user to hide a text from plain sight, the user then simply needs to hover over it to see the hidden text.
So you're probably curious as to what is actually improved? - users can add titles to their spoilers - users don't need to highlight the text, but just hover over it with their mouse - usability has gone up this way, and because it now describes what a user should do.
Nightgunner5 was kind enough to help me out with the title part.
