I\'m getting \"invalid byte sequence in UTF-8\" on page requests (permalinks) and I have no idea why nor can I reproduce it but I do get a lot of exceptions like this:
I've just posted a new gem called UTF8Cleaner which is heavily based on @phoet and @pithyless' work. It include a Railtie, so you can just drop it in to your Gemfile and forget about those "invalid byte sequence" errors.