I'm not a fan of the Facebook trends panel, it seems like is PR and advertising disguised as social media trends. So I made a Chrome extension that replaces it with stories from Reddit.
You can install the extension from here: https://chrome.google.com/webstore/detail/reddit-facebook-trends/gbjbbjnmjelanjckpnebpbbgkilpgilp
It's open source (Contributors welcome): https://github.com/dslounge/fbRedditTrends
I would appreciate any feedback / bug reports / suggestions to make this better.