Last Updated: Jul 23,2009
In case anyone wants Sherpa - xda-developers
Someone ripped it.
I don't know what you mean by 'ripped', but if you mean any kind of crack/piracy, it's probably a Good Thing that the thread which your link points to has been removed.
[Edit: I didn't mean to insinuate anything. Thanks for the new link.]
No, not piracy. Its a free app that ships with the HTC Magic. No more 'illegal' than Haykuro or one of the others releasing Hero ROMS.
And it was removed because of it being a duplicate post. Here it is:
Separate names with a comma.