What’s Trending
http://whatstrending.com/
Google Trends
http://www.google.com/trends/
Twitter / Trends
https://mobile.twitter.com/
Trending on Instagram
http://www.oninstagram.com/
Top Hashtags
http://top-hashtags.com/
http://top-hashtags.com/
Twitter Search
https://twitter.com/search–
YouTube Trends Dashboard – YouTube
https://www.youtube.com/
Finding Popular Conversations on Facebook
http://newsroom.fb.com/news/