Leaving the iPhone
mattcutts.com
mattcutts.com
It would be great if the dupe checker removed query strings.
What about HN also storing the page title ? Upon submission, strip after "?" to check for dupe, in case of positive, check page titles to confirm.
Or just check, upon first submission, that the query string is irrelevant (fetch pages with and without), and strip it out if it is.
A bit slower, on submission, but that wouldn't be bad ;-)