Well as noted in the post it is not just above the links that was only one key part of a wider strategy. This website in question has deep levels of content. So it is not just about a blog section, they have numerous high quality content sections we have developed over time. It would not be advisable ever to attack competitors sites with low quality links.
Hey Jeevan, Forums can ban people for promotion but most of them only do it for certain types of behavior. For example, some of them don't allow signatures until a certain number of posts. All of them will allow related links if it helps answering the question. I have never been banned from a forum and try to play by their rules. Thanks for the compliment and I think you have a great contestant as well, I RTed it the other day cause it is really useful!
To give you an idea of just how much money is being spent on paid search, take a look at Google. Google's AdWords program is the most used pay-per-click (PPC) advertising program available today. While the tech giant owns YouTube and Android, among hundreds of other profitable brands, AdWords accounts for roughly 70% of their revenue -- which speaks wonders for its effectiveness.
Google makes constant efforts to improve the search algorithm and detect quality content and that is why it rolled out the Google Panda 4.0 update. What is this update really doing? It deranks low quality content and boosts the high quality one, according to Google’s idea of valuable content. In the screenshot below you can see what kind of content you shouldn’t be looking into if you are really determined in making a mess out of your organic traffic.
Blog comments have a number of sources of value, and traffic is just one of them. By monitoring your competitors and your betters, you get a keen sense of what the industry is doing and where trends are going. You leave valuable comments and people take notice, including industry influencers and possibly the owners of these top-tier sites. You create a gateway back to your site, and even though the links are nofollowed, they’re still links for people to click. You also build a personal reputation as a commenter around your industry, raising sentiment and value.