I have to say, I've tried others with limited success... this one AMAZED ME!!
Took a 1.6Mb image and crushed it to under 400Kb with almost no noticeable image quality loss... I was stunned.
I normally optimize everything in FireWorks to stay as lean as possible on responsive designed sites that are going to be accessed on Mobile Devices.
Of course the client doesn't even think about that, or what you told them when it comes to adding images and photo galleries (image and file size), they just go right ahead and load it up with big fat image files... not anymore!
Super handy, great work!