Thanks for this great software. With Xee and The Unarchiver you gave us 2 of the most wanted and needed software on mac. I can't understand why nobody did it before, because it's so obvious that this is the way cool apps should works : simple and fast ! :+)
Just for help : I can't extract the archive of WebGrabber you can find here :
http://www.epicware.com/webgrabber.html
It's a normal tar.gz file, and BomArchiveHelper extracted it without problem (as Stuffit).
hth