A fitness site can have numerous revenue streams. Create healthy eating plans and recipes and lock them away as premium content. Promote and sell a fitness training course, eBook, or a series of videos. Or advertise your own personal fitness services on your site. Topfithub is a good example of a fitness site with decent video content alongside product reviews.
Donate Blood Plasma. This hack come from fellow blogger Melissa Blevins, who has been making upwards of 400 dollars a month donating blood plasma. If making a few extra dollars wasn’t good enough, donating blood plasma can save lives. Need more reason to donate, donating blood plasmas can burn 650 calories, beats the exercise bike for an hour! (420 calories)
If you have website design experience, look for local businesses with out-of-date websites or poorly managed social profiles. Give them a call or send an introductory email offering your services. Offer to provide a free consultation and clearly and realistically explain your skill set and how you can help their organization. Many small businesses are floundering when comes to branding, marketing and keeping up their online presence—so if you have expertise in that area, by all means use it.
Using the money you already have to make more money is usually a pretty smart move. A service like Lending Club is a great way to act as a lender and earn interest on your money. Essentially, you act as the bank, which is pretty neat. Lending Club is the world’s largest online credit marketplace connecting borrowers and investors. Definitely something worth looking into!
Cafe Press: This website allows you to create digital designs that can then be sold on the platform. You'll earn a commission for everything that sells and you'll never have to deal with printing, warehousing, customer service and so on. The site has over 2 million independent designers that have created products being sold online here. If you have some graphic design skills, then this is a great potential source for your web-based income.
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. 
CIT Bank offers an interest rate of 1.85% on money market accounts — more than 15x the national average. Just like with a checking or savings account, your money is FDIC secured, there are no monthly service fees, and you can access your funds any time. All you need is $100 to open an account and start earning more money on the cash you already have.
Do your friends look to you for advice on things you're passionate about, such as which car to buy, how to repair appliances or how to make a killer cheesecake? Whatever your area of expertise, if you are also a seasoned writer with an infectious enthusiasm for a particular topic, consider becoming an online expert guide. Guides are freelancers with an ability to communicate well and good grammar and spelling skills.
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.
If you don’t mind doing other people’s chores, then TaskRabbit is a great option for making money online. Earn extra income by walking your neighbor’s dog or mowing Mr. Smith’s lawn. It might seem like not the most lucrative option, but the top taskers reportedly earn as much as $7000 a month, making this a full-time way to make money online for some.
Turn your photographs into cash via sites like Fine Art America, which lets you upload your images to sell as prints, t-shirts, phone cases and more. Other marketplaces for photographers include SmugMug, 500px and PhotoShelter. Some sites require a subscription but may provide features ranging from cloud storage to password-protected galleries and a customized website.
Once you have that problem or need nailed, the next step is to validate that idea and make sure you’ve actually got customers who will pay for it. This means building a minimum viable product, getting objective feedback from real customers, incorporating updates, testing the market for demand, and getting pricing feedback to ensure there’s enough of a margin between your costs and what consumers are willing to pay.
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