Jazzoctopus says:
"Why, this is an online etymology resource . . . and much much more!"

Jazz, you're right of course. This is a wonderful etymology resource and I use it all the time. But what I am hoping to find is more of a searchable online etymology dictionary. That way I won't have to pester the demigods of the word world (is that any better Kiwi? ;) in my quest for the origins of such words as "illusion" and "delusion".