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Some brands tend to overwhelm Twitter followers and post around 20 tweets a day, while others post only occasionally. To keep your audience engaged, you should avoid both extremes and stay somewhere in the middle.

We found out that their average Engagement Rate had a tendency to decline after the 3rd tweet they posted during one day. And as you can see from looking at the blue curve, the number of their total interactions (for all the tweets collectively) has grown only slightly after three tweets.

Total Engagement Rate= ((total number of replies + retweets + favorites)/ the number of followers on the given day) x 100 Average Engagement Rate= ((total number of replies + retweets + favorites/ number of tweets posted that day)/ number of followers on the given day) x 100

"meme" as it came into existence: Richard Dawkins, the rabble-rousing evolutionary biologist, coined it in 1976 as a way to describe how ideas are like genes--reproducing by moving from one mind to another, mutating while they're there, and spreading, spreading, spreading into society.

the most successful memes (and we can responsibly generalize that to content as a whole) have a certain evergreen quality to them. This has also been confirmed by Bitly data scientist Hilary Mason, whose link-fueled data set acts an index of the Internet's attention: the most enduringly shared articles have a more timeless than timely quality to them, she once told me in an interview, which presents an interesting dilemma to companies in the business of news.

"Past research about memes shows two things that should surprise no one, but are worth emphasizing: If you can figure out what someone is interested in, you can predict how likely she is to share a piece of content. And the more similar a piece of content is to what she has shared before, the more likely she is to share it."

Email remains a workhorse for marketers: It’s cheap and reasonably effective

According to an April 2013 Economist Intelligence Unit survey of US and UK web users, email ranked as among the top outreach channel at each stage of the purchase process, from introduction, to final prepurchase assessment to post-purchase follow-up.

The greatest percentage of marketers still felt challenged to create relevant and compelling content that will really draw in recipients. This ranked as the No. 1 challenge among B2B and B2C respondents to achieving their marketing objectives, but it was also considered the most effective tactic, cited by 71% of B2B marketers and 65% of B2C marketers. If marketers can create strong content, they believe it really does work at converting consumers.

About 42% of study participants have multiple accounts — and the percentage jumps to 61% for those between the ages of 18 and 34. The average person also manages 3.1 email addresses compared with 2.6 from last year.

Although 52% of respondents said they have considered taking a “vacation” from one or more social networks in the past year, only 24% said they will likely follow through. Why? FOMO, of course.

Ever heard of the Temporo-Parietal Junction? No, it's not a train station, nor is it a 60's-style rock group. The TPJ, as it's also known, is the area of the brain that gets activated when we're thinking about how to share something and who to share it with. If you want to make something go viral on Facebook or Twitter, in other words, the TPJ is where you want to hit — because it lights up like a Christmas tree before we even know we're going to share something. The more activated it is, the more persuasive the share. And it doesn't necessarily have anything to do with what we think is cool ourselves.

You might expect people to be most enthusiastic and opinionated about ideas that they themselves are excited about, but this research suggests that's not the whole story. "Thinking about what appeals to others may be even more important."

you know that feeling you get when you see something on Facebook that you have to share with a specific friend? That moment when you get an image of how they're going to react when they see that news story or this kitten? That, apparently, is your TPJ working overtime.