buckworks - 3:00 pm on Aug 16, 2012 (gmt 0) [edited by: buckworks at 3:14 pm (utc) on Aug 16, 2012]
some understanding of "keyword co-occurrence"
Here's an example.
The word "tuxedo" could mean one of several things.
- a type of domestic cat
- the name of a neighborhood
- probably some other things I haven't thought of
A search engine (and also you or I) would discern the difference by looking at what else was on the page. If the page mentioned words like "fur", "purring", "whiskers" and "claws", it would conclude that the "tuxedo" on that page was likely discussing tuxedo cats. However, if the page mentioned things like "vest", "cufflinks", "patent shoes", "bow tie" and "prom", it would recognize that the page's "tuxedo" references were more likely about men's formalwear.
On the other hand, if you wrote that you felt like a cool cat in your tuxedo and your date was purring because you looked so good, such wording would confuse the search engine unless it had more signals to look at.
If 127 pages linked to you that were themselves clearly about men's formalwear, that would clarify that your own page was about formalwear, not about tuxedo cats and kittens.
[edited by: buckworks at 3:14 pm (utc) on Aug 16, 2012]