In her article for Search Engine Watch, Carrie Hill explains well the use of KEI (Keyword Effectiveness Index) in evaluating keywords. Basically, the KEI compares the frequency with which a keyword phrase is searched for with the number of competing web sites that show up in the results. If the frequency of search is high compared to the level of competition, that results in a high KEI, and indicates a “niche” keyword that may be easier to get great rankings for.
An earlier article in ClickZ also does a good job of explaining KEI, which is always a factor in our own keyword recommendations to clients. She also discusses the two keyword evaluation databases we like: Keyword Discovery andWordtracker.

Here’s another in our series looking at Bill Hartzer’s search engine tips. The meta
Bill Hartzer has an excellent blog on search engine optimization (SEO), and
Choosing which keywords you want to chase in your SEO strategy can be a challenging task. Go after terms that are too competitive, and you might not get there in time, or at all. Go after terms that are easier to rank high for, and you’re likely to get there much faster, but at what cost?
One of the worst things to ever happen to web sites was the discovery of keyword density. According to copywriting expert Karon Thackton, “the mere introduction of this concept led to the mutilation and destruction of innocent copy all across the globe. Without any regard to flow or customer experience, website owners around the world began shoving keyphrases into their copy like wild men. The results have been disastrous! Otherwise wonderful content has been utterly destroyed.”

