GrepWords is Mine, All Mine, Muhahahahaha…. well, also Carters, but still, close enough.

So, it is rare that I make the foray into paid tools, but I finally decided to bite the bullet and jump in. About 4 months ago I was reached out to by the folks at GrepWords as I was working on a post on YouMoz and had put out a request over Twitter for any ideas on keyword tools. At the time, like many of you, I had never heard of GrepWords. They were a beta API at that point and only really offered 2 things. Lots of keyword data, fast. Interestingly enough, that is what I needed. That is what I have always needed. Unfortunately, they needed a lot of work. They couldn’t really do payment processing well because they were outside the U.S., they didn’t really have a nice design or any tools tied to it. They built up a decent group of beta users who...

Possibility, Probability and Proof: On Case Studies, Correlation and Causation in SEO

I wanted to spend a bit today dealing with a pretty big issue that I see regularly in our industry, bickering over the state of research in search engine optimization. Rarely a week goes by where someone doesn’t say something about correlation does not equal causation in response to the mere sight of the word. So today, I’m going to write about 3 types of SEO research we see in our industry quite regularly and what I believe the appropriate response should be… Case Studies This one is actually my pet peeve. We tend to let this one go with a pass nearly every time despite the fact that it is likely the least meaningful SEO research presented. I was particularly drawn to this issue after a series of case studies coming out of Link Research Tools...