Really Fast and easy to use. No Spam. Superb Performance.

Vuukle is great plugin to have. I found it out as an alternative to the current comment plugin I was using, but Vuukle is more than just a comment plugin.
Its really fast and light. As for comments system, it is fairly easy to use for anyone. The Spam filters are superb. It can even block hate speech and toxic language if I require it to.
Other features like the Emote bar, Share bar, points system for commenters, etc bring on additional features of multiple plugins in a single shed. Plus it also gives my readers a more of a social media experience.
As for audience engagement and retainment, the plugin seems to be having an impact as well. Its recommendation engine has to an extent helped recirculate significant traffic.
I would say this is a innovative plugin with multiple benefits.