Rated 4 out of 5 stars
It is written that the supported sites are:
* Megaupload.com (now with auto-CAPTCHA support!**)
However, MediaFire.com doesn't work. In http://www.mediafire.com/?1dy12zwqyyn page, I still have to click the file link myself, and no skipscreen page is showing.
While MegaUpload.com, I still have to enter the CAPTCHA code on my own. I installed the userscript and it works perfect though.
I still LOVE this add-on very much, I hope it will continuously be updated. Good work. ;)