I thought that one of the more interesting topics addressed at Search Engine Strategies San Jose a while back was that of SEO and the publishing industry. This is an industry seemingly at war with entities like Google (at least partially), even though ...
Real-time search is still an emerging concept. At this point, using a real-time search engine will bring you results by time/date. This doesn't always cater to relevancy, which is why there is still a lot of work to be done in this field.