Backlinks are basically Authoritative linking. Which means someone else says about your site that it is in an indication of a particular keyword or you have authority in a particular market is indicating that their readers can go and find more helpful information from certain places on the web and they do that by creating these authoritative links which also called backlinks. The more of high quality, authoritative links that you have, Google considers this as you are being incredible in the market. Your website can be authoritative by having other website owners to link to your website, Then Search Engine algorithm will consider your site and you will get higher boost to your SEO and your site will likely get higher ranking and the more of this authoritative link. Blog Commenting is a great way to get backlinks to your website. Step 1. Find relevant and high traffic blog in your niche. Step 2. Actually read the post, what all it’s about. Step 3. Just leave relevant comment to the topic, then simply place your link in the comment.
So, you have downloaded your links profiles on a CSV and you now have an extensive list of all your linked domains. If you have been doing SEO for 8+ years like me you can probably just know from analysis which links are bad from a TLD and URL point of view. If you do not know too much you can use tools such as Link Detox: http://www.linkdetox.com/ to complete analysis of your link profile. I would always consult the advice of an expert SEO in this instance because it is easy for these tools to mistake good and bad links.
Love the five different area of investigation that you went over, great way to analyze and diagnosis the issue. I would also definitely agree doing a rankings comparison between the two time frames, and not only check what your Google ranking is, but also track the search volume for your keywords to see if it has fluctuated or gone down. Google Trends is a great tool for this as well, as one of your keywords that your ranking for may have just lost popularity online.
This is the number of views that you can test each month on your website.It's up to you how you choose to use them, either by allocating all the views to one test or to multiple test, either on one page or on multiple pages. If you have selected the 10.000 tested views plan and you run an experiment on your category page which is viewed 7000 times per month, then at the end of the month 7000 is what you'll be counted as tested views quota.