Study: Best times to post to Twitter, Facebook, and Tumblr | Ragan.com | Public Relations & Social Marketing Insight | Scoop.it
Twitter is good for afternoons; Tumblr is best after dark.

 

Bitly is a service that shortens links so they can be shared and tracked on social media sites such as Twitter and Facebook. Recently, Bitly mined its data to determine which days and times are best to share content so they will go viral.

 

The service looked at posts on Twitter, Facebook, and Tumblr. All times are Eastern....

 

[Some very useful social media tips - JD]