lucy24 - 6:20 am on Sep 10, 2012 (gmt 0)
I guess the most obvious solution would be to remove the excerpts from the home page
If it were anything other than the home page, I'd have said the obvious solution was to no-index it.
I know your situation. I've got one humor page whose text consists almost entirely of actual search strings I've found in logs. Letting the page be indexed would be pretty disastrous, because you'd get a stream of people searching for that exact same string again :)
Hm. On some types of sites, no-indexing the home page might be a pretty good idea. Would it make the search engines mad?