It's beneficial for the company because it receives both advertising and sales leads that it wouldn't necessarily be able to access otherwise. It's also beneficial for you and their other affiliate publishers, who are able to make money from sales without actually having to get involved in handling the transaction. Since all you're doing is essentially connecting people with products, affiliate marketing can be one of the most time- and cost-effective methods to make money online. (See also: 5 Ways to Make Passive Income Online)
Since the emergence of affiliate marketing, there has been little control over affiliate activity. Unscrupulous affiliates have used spam, false advertising, forced clicks (to get tracking cookies set on users' computers), adware, and other methods to drive traffic to their sponsors. Although many affiliate programs have terms of service that contain rules against spam, this marketing method has historically proven to attract abuse from spammers.
Long-Tail Keywords – specific keywords usually with 3-7 individual words in a phrase. They are highly targeted and MUCH easier to rank for than broad keywords (all mine are long-tail). The lower your domain authority (check using OSE), the less competitive (more long-tail) your keywords should be. If you can get more specific and the keyword still shows up in Google Autocomplete, Moz Keyword Explorer and other keyword tools… choose the SPECIFIC one.
Build relationships. Affiliate marketing takes a lot of work and patience before any real money is made. Affiliate marketing programs drive traffic to the affiliate marketer's website, but the marketer is responsible for building lasting professional relationships with the affiliate partners out of that web traffic. The marketer must also continually seek out better partnerships with other affiliates.
Despite its older origins, email lists are still a viable source of affiliate marketing income. Some affiliates have email lists they can use to promote the seller’s products. Others may leverage email newsletters that include hyperlinks to products, earning a commission after the consumer purchases the product. Another method is for the affiliate to cultivate email lists over time. They use their various campaigns to collect emails en masse, then send out emails regarding the products they are promoting.
Keep in mind though, you don’t need a website to do sponsored content since you can also get paid if you have a lot of social media followers. My wife has a pretty big Instagram following, and she gets all kinds of sponsorships. Not only does she get paid in cash, but we get a lot of free stuff, too. We’ve received free rugs, free lights, and free carpet cleaners. She only promotes things she loves though, so this strategy works really well for her.
The problem with affiliate marketing, like many other home business options, are the so-called gurus and get-rich-quick programs that suggest affiliate marketing can be done fast and with little effort. Odds are you've read claims of affiliate marketing programs that say you can make hundreds of thousands of dollars a month doing almost nothing ("Three clicks to rich!"). Or, they suggest you can set up your affiliate site, and then forget it, except to check your bank deposits.