While researching how to let Googlebot index (but not cache) login-protected pages, in hopes of gathering a user's interest enough via search results to have them subscribe to our site, I ran across an example of exactly what I want to do.
The following link is a list of search results, the fourth one down being a .pdf file on the IEEE website. Now, when you go to it you're redirected to a "login required" screen. This is cloaking, is it not? How do you go about doing something like this?