I’m a 45 year old business owner who also has focussed on diversifying my income streams. I have a short term vacation rental in Florida that I bought for $390k in 2012 and net rental income for the last three years has been growing steadily. 2015 I am at $70k gross right now but should end up at $80-85k with net around $45k plus we use the place about 35 nights a year.

It works essentially the same way as the phone apps do above. If you don’t care to let Google know what you do on a daily basis, you can make money from home by letting them monitor your Internet usage. They use the information they gather to help them market/increase the functionality of their advertising programs when targeting users that are similar to you.

Earn cash back for shopping. Earning cash back on your purchases is a smart idea, and credit card rewards aren’t the only good cash-back strategy out there. With sites like ShopAtHome.com, eBates.com, and TopCashBack.com, you can earn up to 10% cash back on purchases made with approved merchants. Many frequent shoppers also love the Ibotta app, which lets you earn cash-back on every purchase.
I collected cans in my teens and made a few extra bills for spending money. If this idea is of interest, you might be motivated to hear the true story of Maisie Devore who was able to raise money collecting cans for a community swimming pool.  She was able to save $73,000 over three decades and is still collecting. Whoa! Learn more about this idea by reading my collecting aluminum cans for cash post.

Oh, my! That is quite a comprehensive list of ways to make extra money. I think many folks are looking to make an extra buck – especially online. And somehow just because it is online, they think it should be easy as well. My experience is that most of the money making ideas are good but need persistence and follow up before they start generating serious coin.
If you’ve got a way with words and expertise in a niche, there are plenty of sites that will pay for articles and content you write. Think of the sites you read regularly. What can you contribute to them that would be interesting? Research your niche and then look for ways to pitch articles. Many sites will simply have a submission or contact link in the footer. To get started, check out my full guide to becoming a freelance writer on the side and then submit your articles to places like Instash, Listverse, TopTenz, A List Apart, International Living, FundsforWriters, and Textbroker.
I have to agree. Our Duplex cost us 200k initially in 1998. Over time and completely refurbishing the property with historically appropriate sensitivity, we invested another 200k or so. We just had a realtor advise us we could ask 700k for it today. It nets us 30k annually after taxes, insurance and maintenance. We still have a loan on it which I have not taken into account, that will be paid off within 5 years if we keep it. My mental drama now is, while I am quite giddy over the prospect of earning a tidy sum of profit if I sell, what then would I do to equal the ROI and monthly income this thing generates? Rents are low, they should be 4k a month and will only go up. Tempted to keep it and not sell. And while I do have some stocks, I basically suck at them. I am much better at doing properties.

I have tried to sign up & complete cash for surveys in the past and then felt like I was being led down a rabitt’s hole, going from one “skip” and/or “submit” to another without ever, seemingly, actually completing the entire process.  So, when I saw CashCrate recommended in ptmoney.com, I thought it was going to be more straight forward, but, alas, no, I entered the rabitt’s hole once again, coming up for air only after an entire hour spent hopping, skipping, and jumpring all over the place, netting 25 cents in earnings!  Has this been anyone else’s experience and what has been done to remedy the situation?  It seems like there must exist an insider’s trick or, at least, know-how that I am missing. 
I personally haven’t tried any of the below methods so I can't speak from experience to how they work. In my mind, the most lucrative way is through building a REAL business online and providing your visitors with great value. However, after some thought, I decided to include these here because, quite often, the biggest roadblock for many is a mental one: believing that making money online is possible. From my experience, once you have made your first dollar, or even your first cent online, the world is suddenly a different color.
If you have a vehicle that just sits in your garage for long stretches of time, you might find a car rental service like Turo is one of the easiest ways to make extra money. Let’s say you list your 2014 Nissan Maxima in Denver, CO. If you rent out your car for just 11 days a month, Turo says you could make around $385. That’s over $4,600 a year!(6)
Perhaps a coworker purposefully tries to make your life miserable because they resent your success. Maybe you get passed over for a promotion and a raise because you weren’t vocal enough about your abilities, and mistakenly thought you worked in a meritocracy. Or maybe you have a new boss who decides to clean house and hire her own people. Whatever the case may be, you will eventually tire.
However, if you're looking for realistic ways you can start earning money online now, then it really truly does boil down to seven paths you can take towards profit. Some will provide you with immediate results, helping you to address your basic monthly necessities such as rent, utilities and groceries, while others have the potential to transform your life by revolutionizing your finances in the long term.