This has Following Benefits:
-This makes all links clickable.
-When downloading from Megaupload Captcha code will be easier to fill and
the download will start without any counter.
Downloads will be resumable for small files.
-It will never show that you have passed your country's download limit.
-Downloads for Depositfiles will start instantly and automatically.

Note: This is not compatible with all versions of Firefox.
It worked on v3.0 Beta5 but not on v3.1 Beta3.

100% working and please reply sooner and tell me how was it?