I have been cloaking for quite some time now and have been seeing decreasing results for the past few years. My main question is in Google. Almost all of our cloaked pages are listed in the engine as Supplemental Result. This of course drops them down in the rankings to the point you can only rank for the ultra obscure terms. I'm mainly wondering if anyone else sees the same things with their cloaked pages.
In addition, all our pages use IP based cloaking that is kept up to date by a few reliable services. Do you think you get tagged as supplemental for on page factors, or if they detect some kind of cloaking activity, i.e. mismatch eTags, missed spider, etc.