Easy Way to Make 500$ Extra per Month

This is something I tried out and it worked well so I’m sharing it here…
I have multiple white hat sites. I use Google Analytics on them all. So I was browsing through Analytics and seeing what keywords drove people to one of my sites and noticed a keyword really had nothing to do with my site (this particular site was a forum) and so I noticed in a thread someone mentioned this keyword and this thread got indexed highly in Google for this keyword. This automatically told me competition for this keyword is almost nonexistant. Now you can do keyword research and try to find weak competition keywords, but by using Analytics I was able to find something I knew 100% was very weak in competition.
So I bought a domain with this keyword in the name. Cost $10. Time spent 5 minutes.
I installed wordpress and wrote 5 articles. Cost $0. Time spent 45 minutes.
I optimized my wordpress blog using maxblogpress plugin, xml sitemap plugin, all in one seo plugin. Cost $0. Time spent 20 minutes.
I added one adsense ad to my site. Adsense ad is 300×250, and I put it between the title of my article and the article. It abides by adsense t&c, nothing shady there. Cost $0. Time spent 5 minutes.
This was my initial test. $10 of cost, 1 hour and 15 minutes.
My site’s homepage URL was indexed on second page of Google within a week and was bringing in a little adsense revenue. After 2 weeks one of my articles was also indexed on the second page. Clicks were only generating $0.10/click but i wasn’t trying to make a million bucks with this. And i knew if i did a little link building i’d get on first page easy.
I spent 20 minutes setting up a scrapebox blast to build some backlinks and blasted out backlinks. I got about 1,000 which was more then enough for a brand new site. Both my homepage URL and article were on first page within another week.
I now waited a week and in that week I made $40 from adsense. Not bad for a $10 investment and less than 2 hours of time.
I then bought 3 more domain names (with keyword in domain). Ran through the same exact process. Now I own 6 out of the 10 places on Google’s first page for this keyword. In the first full month I made $300. Now is the second month and it’ll come out around $425-450ish. I do not own the top spot yet, so if I get there I can probably get up to $600-700/month capped out. Keep in mind, this is all for a keyword that pays only $0.10/click on average. My clickthrough rate is 20-25% on average.
Now I am writing 1 article per week (takes 5 minutes). I spin it 4 times. Upload one spun article to each of my four sites. So my upkeep is 20 minutes/month to earn a couple hundred per month.
I’m not sharing my keyword, or my sites so don’t ask. The point of this thread is to point out another method for keyword research which I haven’t heard many people use. And also to point out that you can make some easy money with low paying CPC keywords, you don’t need to attack the insurance or health care niche to make $XXX per month.