"Some studies say you've only got 15 seconds to grab an audience's attention, while others say it's closer to a minute," writes Richard Feloni of BusinessInsider.

"Just because you’re been doing this for a few years doesn’t mean you have nothing to learn," says Allison Boyer.

"LinkedIn is a great platform for finding capable employees, but that's only the beginning of its value," declares Scott Gerber (photo, left) in a piece at Mashable.

Shanna Mallon (photo, left) uses a play on words to make her point.

Corey Eridon (photo, left) examines the data on the topic and provides the introduction to the infographic.

"How long should my tweet be?

"Launching a product is hard to do," says Drake Baer of BusinessInsider.

John Brandon has mastered his email inbox but "there's one thing [he's] mastered even more than that: spotting a lack of confidence.

"There are so many interesting facts and numbers in the world of presentations, this infographic could be 5 times the size.

"Our focus has shifted from Social Media to VISUAL Social Media.

According to Richard Feloni, "Once you finish your written speech or PowerPoint slides, you're only halfway done preparing a great presentation.

"It’d [be] easy to bash PowerPoint, especially given the poor uses we see all too often .

"Twitter’s search tool is an incredibly powerful part of the system but it’s criminally underused.

According to Karla Guiterrez, "eLearning professionals are often over-confident about a course’s ability to capture an audience’s attention and engage users with its content.

"This article looks at strategies you can use to ensure that your use of email is clear, effective, and successful.

According to Vicki Davis, "Every email message from a parent or colleague is an opportunity to create a powerful impression.

According to Melia Robinson (photo, left), "It's the cheapest, most low-tech life hack you'll find.

"Here are seven easy ways to prevent email from killing your productivity and taking over your day: .

According to Bob Hutchins, "What people are sharing and how they’re sharing it is changing.

"Here are 11 email etiquette rules you should always follow at work.

According to Richard Felloni of BusinessInsider.

"Here is one of the most common business inquiries I receive: 'I am about to launch a (business/book/seminar) and want to use Twitter to do it,'" says Mark W.

Justin Gmoser covers the topic in a video presentation.

"To many people, LinkedIn seems like a chaotic, confusing mess," declares Janet Scarborough Civitelli, Ph.

"Videos and photos are more likely to get clicked and shared on social media.