As first times go, everyone remembers theirs. My first encounter with a social media site was with Flickr. Seeing as this was my first, I’m not sure why I took so long to write about it in this series, other than to say that, from an SEO perspective, Flickr is not as sexy as StumbleUpon, Digg et all.

This week I take a look at Flickr, by the numbers.

The History:

Case in point. I’m driving into work a couple of weeks ago along the northern shore of Lake Ontario, and voila. I see a phenomenon I’ve never seen before, and have only heard about once.

Ok I think, wheres my camera? Oh good, its here. And I snap a few shots.

Here’s the result; Snow Donuts … A Natural Weather Phenomenon

This post is part of an ongoing series: How Search Really Works.
Last week: Keyword Stuffing.

What is Keyword Density?

Keyword Density is a function, a calculation, of keyword frequency.

It’s calculated as number of occurrences divided by number of words and is usually expressed as a percentage.

What is Keyword Density Used For?

Nothing much, really.

Keyword density can help in readability calculations.

Keyword density is also sometimes used as a simplified manner to introduce local keyword weight but should never be confused with it.

Why don’t Search Engines use Keyword Density?

source: pcweenies.org