is it possible to get the Youtube Trends http://feeds.feedburner.com/youtube-trends via json?
Youtube GDATA
http://gdata.youtube.com/demo/i
If you are looking for the Trending videos on YouTube, you can find that feed at:
https://gdata.youtube.com/feeds/api/standardfeeds/on_the_web?alt=json
It is described as:
This feed lists trending videos as seen on YouTube Trends, which surfaces popular videos as their popularity is increasing and also analyzes broader trends developing within the YouTube community. This feed is available as an experimental feature.
What you are referencing are blog posts based on that feed, as seen on here.