You could get even more specific by narrowing it down to customer base. Is there a specific group of clients you tend to serve? Try including that in your long-tail key phrase. For example: “SEO agency for non-profits in Albuquerque NM.” That’s a key phrase you’re a lot more likely to rank for. Not to mention it will also attract way more targeted, organic traffic than a broad key phrase like “SEO agency.”
Great article! SEM Rush's new ranking study of 600,000 search queries showed a positive correlation between direct traffic and top rankings. They indicated that Google prioritizes domains with authority and consequently more direct traffic when ranking websites in its search results. See their study here: https://www.semrush.com/ranking-factors/. So, direct traffic can be viewed as a positive ranking correlation.
About.com – How many times have you tried to do something and needed instructions? You Google it and it brings up how-tos from About.com. Well, you can contribute to this site with some of the how-tos for your niche and get traffic from it. Additional tip – there is an About.com Forum where you can be helpful to people in need and get additional traffic to your blog.
Regarding Link Detox, links it diagnoses as Toxic are generally fine as they're either not indexed by Google or have malware/viruses/etc., but I recommend a manual review of any diagnosed as Suspicious. I used it recently to get started cleaning up our backlinks and some legit sites and blogs were under Suspicious simply because they didn't have many links pointing to them.