Nice touch. BTW, Googling for 'install arc lisp' gets the wiki to the top page or close. I'm hoping that eventually we can get just 'install arc' or 'arc lisp' to do the same. Just 'arc' looks like mission impossible. :) Adding more links to the wiki will help. So listen up, all Arc-fu exponents!
Well, I added links to Arcueid to the wiki as soon as I learned of it, and will be adding links the wiki in Arcueid within the README and wherever else it makes sense to do so.
I see Wikipedia's article on Arc links to the wiki as well, although perhaps it should be amended to be more prominent than a single footnote citation.