I presume this applies to page templates with a substantial amount of similar content and functionality [ e.g. search boxes with lot's of similar menu's ] as well, where the ratio of this to unique text is high.
Great thread, and thanks for the post Adam. This is something I have been seeing for a while, and it relates to two topics that are being discussed here. I have alot of pages dealing with cities within a country, with search boxes with lots of repeated city names in each. First off G indexes the pages as in a foreign language, though all the city name spellings are in english, and they rank well for my main site, with no drops over the past 8 months (though the same reindexing as a foreign language on a smaller site and less inbound links it almost dropped it out of the SERPs totally). The second issue is that some of these lists are taking up a little over half of the page or more (and the larger the saturation in the dropdowns, the more pages it is repeated on). I haven't seen any movement for quite some time, and have been in discussions whether or not to redesign the menus on another noindex-ed page. This info may be a catalyst to get it done, though I am wondering how much weight is really going to be put into en rankings for sites indexed as being in French, German, and Italian. Anyone else have the same thing going on?