Dropbox, an online file storage company that offers both free and paid services, implemented a referral program in 2009 asking users to tell their friends about the service. The program offered rewards for both sides of the referral coin—those who signed up for a referral link would get additional free space, and the person who referred them would also get more space.
In one option, current customers are given an incentive. The referral rewards can be in different forms, such as cash, prizes, discounts, shopping vouchers, or redeemable points. For example, mobile phone operators give a referring customer a one-time reward and add long-term savings depending on his or her individual usage. The operators also offer a lower rate for interactions between customers than for interactions with noncustomers.
An omni-channel approach not only benefits consumers but also benefits business bottom line: Research suggests that customers spend more than double when purchasing through an omni-channel retailer as opposed to a single-channel retailer, and are often more loyal. This could be due to the ease of purchase and the wider availability of products.
Trust is the foundation of conversions and sales. But building trust should be a goal on its own. The whole concept of content marketing is based on trust and creating long-term relationships. Stop selling and let the people come to you by providing them interesting and useful information. I couldn’t have said it better than Mark Schaefer, the Executive Director of Schaefer Marketing Solutions:
Between 1996–1997, Hotmail was one of the first internet businesses to become extremely successful utilizing viral marketing techniques by inserting the tagline "Get your free e-mail at Hotmail" at the bottom of every e-mail sent out by its users. Hotmail was able to sign up 12 million users in 18 months. At the time, this was historically the fastest growth of any user based media company. By the time Hotmail reached 66 million users, the company was establishing 270,000 new accounts each day.
The first known large-scale non-commercial spam message was sent on 18 January 1994 by an Andrews University system administrator, by cross-posting a religious message to all USENET newsgroups. In January 1994 Mark Eberra started the first email marketing company for opt in email list under the domain Insideconnect.com. He also started the Direct Email Marketing Association to help stop unwanted email and prevent spam.  
The portraits were then placed side-by-side, and notable differences were found between them. The portrait based on the stranger’s description was more attractive than the portrait based on self-description. The message that the campaign aimed to convey was “You are more beautiful than you think.” Below is the video of Dove Real Beauty Sketches campaign:
Apple maintains it’s viral appeal, with the iPhone X through their launch of the "Selfies on iPhone X" campaign. The secret to this example of viral marketing (which has clocked up over millions views both online and offline) is very simple: a product so great that it turns people into fans of the brand all on its own. People love themselves. If they have the possibility of spreading this love digitally through selfies, it’s almost a guaranteed win. The iPhone X’s brilliant selfie feature spread virally through various media forms before apple repurposed the viral content into one masterpiece, the iPhone X selfies film. As one of the YouTube comments says, “It’s the most beautiful thing I’ve ever seen”… This viral marketing through video has allowed Apple to spread key features such as their Portrait Lighting effects and their TrueDepth camera.
The second reason behind this shift in video marketing strategy is the way in which platforms have evolved in response to this new consumer behavior. As YouTube’s product manager Nicky Rettke explained earlier this year, “Historically, video advertising hasn’t been actionable, optimizable, or measurable against direct response objectives. The only way someone could ‘act’ on a video was to watch it.” That changed in 2018. On YouTube, for example, new video formats like TrueView for action allow marketers to start optimizing for a specific user action, like signing up for a service or buying a product.
Referral marketing is a powerful conversion tactic, as people value “realness” and are more apt to try a product or service that’s recommended by a friend or some other trusted source than something they come across via traditional advertising. Referrals can come from friends, influencers, product reviews, news articles, and testimonials. In order to launch a successful referral campaign, brands must offer compelling incentives so customers want to refer others. They must also make the referral process as easy to use as possible. Additionally, brands must treat their referral program as they would a new product launch and educate both customers and employees on how the program works.
Find a Location. Decide on a spot to record. If you can’t go to a professional studio, try to pick a quiet room away from distracting external sounds like sirens, opening and closing doors, and people talking on the phone. Read your script aloud, and pay attention to the room’s acoustics. Does your voice echo or sound muffled? If so, consider recording in a different space or adding furniture to fill in the room.
Most products are bought not because of the impact of ads alone but through word-of-mouth. If someone has bought a mobile phone and is happy with it, he or she is likely to tell it to at least 10-12 people about the merits of the product. This kind of marketing comes free for the company and in a way it is a reflection of the branding effort taken by the company.
According to the U.S. Commerce Department, consumers spent $453.46 billion on the web for retail purchases in 2017, a 16.0% increase compared with $390.99 billion in 2016. That’s the highest growth rate since 2011, when online sales grew 17.5% over 2010. Forrester predicts that online sales will account for 17% of all US retail sales by 2022. And digital advertising is also growing strongly; According to Strategy Analytics, in 2017 digital advertising was up 12%, accounting for approximately 38% of overall spending on advertising, or $207.44 billion.