Fluid Enabler allow you to use great features from Fluid’s Site Specific browsers (SSb) for Mac OS X, like Dock badge and Growl Notifications.
This plugin only works on Mac OS X because it uses third party Macintosh software. You need to use a Site Specific browser built with Fluid app to see notifications and dock badge.
If you're using a Fluid browser on Mac OS X, everything should be fine.
The number you can see on the dock icon (in the badge) is the number of comments your moderation. It looks like Mail's Dock icon. Useful to see quickly if there are new comments.
Fluid is a software that allow you to build Site Specific browsers (SSb). A SSb is a web app that behaves like a regular desktop application, using its own browser. SSb allow you to use your browser for browsing, without having to keep a hundred tabs for Facebook, GMail, MySpace and other web apps. Check it out !
Growl is a notification system for Mac OS X : it allow supported applications to send you notifications about what's happening in your apps. This plugin allow your WordPress blog to tell you about updates and new comments. Many apps are supported : Aduim, Thunderbird, Yahoo!, Transmission, Cyberduck, Last.fm, and so many others !