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.

You would almost think blogging was dead, the way headlines are dominated by Twitter, Facebook, and social media in general. I've always considered blogging to be a part of social media anyway, as the commenting factor lends to engagement between author and user.