"We asked career, email, and marketing experts to offer their best tips for crafting the perfect email subject line.

"Google is a more powerful tool than most people realize.

"Do you know how you sound in emails?

Matt Rosoff makes the case at BusinessInsider.

".

According to Todd Wasserman (photo, left), "Facebook announced that it intends to crack down on "promotional content" from brands, citing feedback on Friday from users who complained about too much hucksterism in their News Feeds.

Tessa Wegert (photo, left), gives us "a look at a selection of brands that are embracing the new capabilities of Twitter and using the platform to its full marketing potential, along with tips for ways you as a marketer can do the same for your own business.

TeachersWithApps.

"In this post, seven Twitter power users in the online marketing field share their tips for getting the most out of the popular micro-blogging platform.

The U.

This website offers a wealth of advice on producing quality videos.

These online tools (many are free) offer a variety of ways to create infographics.

Get everything you need to know from the Mobile Marketing Association.

The communication professionals at CommPRO explore the good and bad in crisis communication.

"We sabotage ourselves by underestimating the desire of our customers and potential customers to connect with our businesses online," says Katie Wagner (photo, left).

"We need new rules on when you should text, when you should call, when you should email," writes Nicholas Carlson (photo, left).

Lee Odden (photo, left) covers the topic.

"Knowledge seldom takes the place of experience.

Usability experts at Nielsen Norman Group offer dozens of research-based articles on effective communication using mobile devices and other technologies.

Dianne Gottsman (photo, left) advises, "As you set out 2014 with fresh goals and resolutions, don't overlook your social media profiles and activity.

"You only have few seconds to capture their attention before your message gets drowned in the sea of updates.

"According to a 2013 HubSpot survey, blogging has overtaken SEO as the number one means for increasing traffic to your website.

"Humans have radically changed the way we shop and buy since days of Mad Men, but most companies haven't followed suit.

Bryan Eisenberg covers the topic in an article at ClickZ.

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