It certainly sounds like you're doing all of the things that people who are selling you stuff say you should do, which are probably serving as spam signals as opposed to the link diversity you wanted. But that's another thread.
In the end, it is about content, the quality of that content, the quantity of that content, and whether or not that content can better answer a query than another site that is technically more authoritative than yours. It is also about your site's backlink profile vs. the backlink profile of the sites that now appear on page one for your keys. Regrading the former, and if I'm reading your post correctly, you have a site with 6 articles: 'Quality' is often determined in the aggregate, then compared and contrasted with other metrics. Short version: you need more articles -- algorithms are math; ergo, even 'quality' is determined by quantity in most instances. As regards the latter, if you are committed to the domain, you must analyze the backlink profiles of the top 10 winners, throw out any anomalies (they will be there, probably around 20% of the top 10, actually) and replicate their approach, if it is, if fact, replicable.
Acceptable but it doesn't explain some sites with only 500 words I still see ranking on #1
Also, emds are about something very specific, so adding more information would mean going off topic, which gives you more quantity but not more quality because it's simply not what a visitor is looking for.
Maybe it's better to stick with authority sites. I got 3 big ones but when I compare the effort I have to put into them to the effort mns ask, it is clear that mns are more profitable in a shorter time with less attention.
This is what you do to set up your site initially. Also make sure the quality is HIGH and not some cheap $5 article or copied content or created using one of those re-writter software. Then every week you need to add a new post at least once a week and keep building links slowing so the site is growing at a steady pace with high quality content and backlinks. This is what i do and my rankings rose overall during the last update. Just putting together a 5x500 + 1 x 1000 MNS and then do nothing for months may be considered a low quality website.
My content must be appreciated because I noticed that I often get natural facebook likes and google plus after a while. The cost of my articles depends on the topic. More difficult topics like cancer and such often cost me between $8 and $10 because they require a lot of research..
