Forum Moderators: open
Site Serp Distribution (SSD for short) is defined as distinct serps divided by total # of referals .
So if you have 10,000 referals, and 10000 distinct serps, you'd have a SSD of 1 (which is the maximum). Minimum approaches 0 : 1 serp and 10,000 referals = 1/10000 = .0001
My expectation is that as your SSD approaches 0, you are very susceptible to google updates because if your single serp loses its rankings, you tend to lose most of your referals.
As your SSD approaches 1, you are also susceptible (but probably less so) because SSD=1 usually means you have an automated publishing system that uses an algorithm (automated content creation software) to create content in one form or another. The more sophisticated the algorithm, the less likely your values are to be perceived as spam.
SSD in the middle .3-.7 would mean you have some mix of the two, and you'd be less susceptible to the fluctuations of google updates.
For the poll: give an approx of your SSD, and a measure on a scale of 1-10 about how susceptible your site has been to google chgs. 10 being very susceptible to chg, 1 being rock solid.
So to start:
SSD = .8
Update Susceptibility = 4
Thoughts, comments, criticisms appreciated!
WDSF
You lost me here as I can't possibly answer this question.
I know the number of referals from logs, but how am I supposed to know the number of "distinct serps"?
If I interpret this correctly the measurement is a count of every possible search term for which the site could be found?.....for me its millions, I don't have a clue beyond millions, there is no way to measure it, it could be 10's of millions or billions.
Because the number of possible terms is high, the likelyhood they are all going to get nuked by a Google update (or even a decent percentage of them) is very remote.....therefore stability is high.
I don't know about trying to represent this mathematically....it used to be stated as "Content is King" ;)
If I interpret this correctly the measurement is a count of every possible search term for which the site could be found?
I believe that WDSF means the search terms by which your site actually is found, as opposed to could be found.
Without more careful analysis I have a crude SSD of 0.5, but that is based on search engine plus keyword combo, so kw1 kw2 on Google is considered different from kw1 kw2 on Yahoo. If I make the rather draconian assumption that all searches are replicated on both engines, and so half the number of distinct SERPs, I get an SSD of 0.25. So my true SSD is somewhere in between.
My stability is very close to 1, none of the updates which have caused moaning and groaning have had any effect on my site. I would attribute that stability more to my total avoidance of black hat SEO rather than to my SSD.