JAZZIZM  Be very careful with this app. Just now I tried to trash a hidden file from the app. When I finally managed to force-quit the rm command that was launched from invisibliX the m*****f***** had already erased half of my applications folder. Yikes!  
(Version 2.1)

JAZZIZM  It'd be also nice to have some sort of visual feedback when the script has run successfully (Growl?)  
(Version 1.9.2)

JAZZIZM  First I tried to edit the script to use Camino as my browser as eBay.de doesn't play nice with Safari (multiple re-logins required). So I changed all three appearances of "Safari" to "Camino" but that didn't work. This should be user-selectable. I changed it back and the script does work as advertised. Very handy! (10.4.10, Safari 3 beta)  
(Version 1.9.2)

JAZZIZM  Same here. MacBook, Mac OS X 10.4.10, Mighty Mouse USB. Neither holding down the scroll ball nor holding down SHIFT changes the volume when scrolling.  
(Version 3.4c)

JAZZIZM  Previous versions never seemed to work properly. This one does.. Freakin' excellent!

Now if you could use the remote Mac to display video of the controlling Mac, that'd be awesome.  
(Version 0.10pr4)