Hi Bob.
1. Nothing planned.
2. Crowd Pleasers and Feel-Good Smilers tend to get a lot of likes because of the positive reactions they get. Provocative Controversies and Place Explainers tend to get a lot of comments because they’re easy to argue/talk about.
From the study, on average:
Most Likes: Feel-Good Smilers (Crowd Pleasers a close second)
Most Shares: Place Explainers
Most Comments: Place Explainers (Provocative Controversies a close second)
3. I’d be happy to share some breakdowns of the data if you want to e-mail me: eathas@npr.org