YouTube is testing a new feature ‘Real-Time Comments search’ and this feature has been launched in ‘TestTube’ where in the YouTube engineers and developers test out the upcoming features.
This new search however, is pretty much similar to that of ‘Twitter Search’.
“The full comment will appear on a continuously updated results page, and “trending topics” indicates the hottest topics of conversation on YouTube at that particular moment.”
[Access Real-Time Comments Search Page]
Like Twitter search results, YouTube also displaying ‘Trending topics’, the hot searches that are being made in YouTube right at that moment.
Similar to Twitter, search results get updated whenever a new comment arrives (It has to be that way, since they are meant to be real-time updates).