Some advertisers offer multi-tier programs that distribute commission into a hierarchical referral network of sign-ups and sub-partners. In practical terms, publisher "A" signs up to the program with an advertiser and gets rewarded for the agreed activity conducted by a referred visitor. If publisher "A" attracts publishers "B" and "C" to sign up for the same program using his sign-up code, all future activities performed by publishers "B" and "C" will result in additional commission (at a lower rate) for publisher "A".

For those who keep track of the real estate market, buying, selling, and renting property could be a viable financial investment. Not only will you realize capital gains if you invest in the right property, there is also the possibility of earning rental income. If you had purchased your property relatively early in your career, at retirement you may have paid off the property’s mortgage and so whatever rental income accrues is basically your profit (minus, of course, maintenance).
As an Instacart personal grocery shopper, you will actually be doing the grocery shopping yourself (so don’t crush anyone’s avocados!). Your compensation depends on several factors, like the average size of your orders and average number of miles driven per trip. You can also get tips in addition to the pay that comes directly from Instacart (most people report an average earnings rate of $15 per hour).
Set up a roadside stand. Depending on where you live, you could profit handsomely by setting up a roadside stand. If you live near a resort area, for example, you could buy cases of bottled water, put them on ice, and sell them to passers by for twice what you paid. Selling fruit and produce you grow yourself is also a smart idea in highly-traveled areas.
Become a freelancer in an area where you have expertise. If you have a skill that’s in demand, you can sell your services directly to clients who need them. Advertise your services on a personal website and look for freelancing jobs on sites like Upwork, Freelancer, and Fivrr. Additionally, hand out business cards and encourage happy clients to tell others about your work. Here are some ways you can earn money as a freelancer:[15] https://businessinsightshealthfitness.tumblr.com/
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