Real-time information is red hot all around the web but it made a surprise appearance on YouTube tonight in the form of real-time search for comments, of all things. YouTube comments are notoriously not worth reading, but now you can search their full text...in real time. There are some very real, potential use-cases crying out for a tool like this.
Real-time search appears to have been rolled out very recently, with no mention, on this page. In addition to search results continuously updated ala Facebook's newsfeed ("3 new results") there's also a frequently-updated list of "trending topics" on the search page.
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Unfortunately, there's no feeds being published to syndicate these search results into a reader off-site. The regular search on YouTube now has RSS feeds and Google Wonder Wheel data being published, so perhaps comment search will have feeds added soon as well.
Proper nouns will likely be of interest to searchers watching YouTube comments. This could be a popular addition to the toolkits of social media watchers everywhere.