Posting ads on Craigslist is technically easy, but people often have fears about posting their personal information on the site. I communicate mostly through email when doing business on Craigslist, and I’ve never run into any issues. I’ve never been ripped off, nor have I been murdered or raped for using the site. It takes common sense, so use your best judgment, but don’t assume someone is a thief just because of their preferred communication method. For an extra bonus, google “funny Craigslist ads” to see some delightful examples of guerilla and grassroots marketing.
The best smartphone apps are based on the freemium model, which allows some level of game play or usage without having to purchase. But this also means that you have to build something with real inherent value. It also has to be highly engaging if people are even going to consider paying for an in-app purchase. Take the time to really research this money making opportunity before diving in head first.
Find a profitable niche. Starting with your interests, write down as many niche ideas as you can. Think about topics people might search online. Ideas include passions (like surfing or body building), fears (like spiders or speaking in front of crowds) and problems (like getting out of debt). Do keyword research to see it others are interested in the topic. Find out if a domain name is available that matches the keyword 100 percent. 
Running a coupons website can be very lucrative. Find a coupon niche, select a WordPress coupon theme, and then display relevant coupons on your site. When your audience uses the coupon codes or discount links, you will earn an affiliate cut for example you could set-up a site dedicated to iHerb Coupons or add a page to your website with Web Hosting Promo Codes. Coupon websites are quite high maintenance as they need to be constantly updated with new offers. However, if you build up an engaged audience and allow them to post coupons and discounts they have found themselves, then quite quickly your workload will reduce.
Whether you have a website or are still dreaming up ideas for a blog, you can also look into affiliate marketing. With affiliate marketing, you partner with brands and businesses within the content of your website. If you mention a product or service, you link to that produce or service using a unique affiliate code you received when you signed up for that particular affiliate program. From there, you’ll make money any time someone buys a product or service through your link.
In the past, many affiliate marketers focused on a catch-all approach, offering traffic up to hundreds or thousands of sites, even if they had little authority or traffic to give. But in 2018, advertisers will laser their focus into smaller groups of highly credible, targeted, and popular influencers. To map your strategy, focus on a few key influencers in your industry. Start with them, then nail your niche before expanding outward.
There are quite literally hundreds of clever ways to make money online. From taking online surveys, to renting or selling your old clothes, flipping your iPhone to someone in a different country, and even buying low-cost products locally, just to resell them for a higher price on Amazon. There’s truly no shortage of unique ways to make money online.
25. Products – You can create your own product, such as an ebook or computer software. You would then use your blog as a promotion tool to get people to buy your product. As long as you create a legitimate product with a whole lot of value, you should be able to get some buyers, but like everything else with a blog, you’ll need the traffic to get the sells.