So What Has Changed during the last Google Update?

Trying to understand Google rankings updates

So exactly what is Google doing differently that is causing such drastic changes in the ranking of some sites? Here are several new components which singly could cause quite a bit of change but taken together can account for the massive change in some search rankings: Word Stemming is Now Being Used :this is actually quite a big deal that has been quietly introduced with the Florida update. Google now incorporates a form of word stemming in their search results. Word stemming allows all forms of the word - singular, plural, verb form as well as similar words to be returned for a given search query. This can work both for and against a site depending on which form of a word a page is primarily optimized for. So if someone types in "house plans", not only will pages that are optimized for that phrase be returned, but so will pages that contain all variations of that phrase, for

example:

rome tour

rome touring

Word stemming is in general a helpful feature for searchers to have, since it saves one from having to think of many variations of a word. However, it can have big implications for webmasters who have carefully optimized their pages for the most popular (most searched on) version of a keyword phrase. Word stemming can help as well as hurt your ranking for a given page as not only does it increases the number of words that you can rank well for (even if you do not include a given form of the word anywhere on a page) but it can also increase the amount of sites (competition) returned for a given search query. Given the “house plansâ€� example above, one of my clients currently ranks #1 on Google for “house planâ€�, even though that phrase is not used anywhere on the page! Stemming can be overridden. When you enter a search query in google, place a plus “+â€� sign in front of the word for which you want to disable stemming for.

Sites Are Being Classified Into Commercial and Non-commercial:Google appears to be trying to classify all sites in their index as being primarily either non-commercial (informational) or commercial (ecommerce). The new algorithm seems to primarily affect commercial sites in those industries whose associated keyword phrases cost the most to bid on in the Google AdWords program. Some believe that they are being deliberately forced to start an AdWords campaign so as to enhance Google's profit margins in the months before their IPO. Sadly there seems to be credible evidence to support this idea however it seems somewhat unreasonable that Google would risk public opinion and favor using such a tactic. Google would forever be tainted, not to mention the legal fallout if this were proved true. Whether it was deliberate or not, those keyword phrases that were affected the most on the Hit List on Scroogle (www.scroogle.org) overlap substantially with the those keywords that cost the most in the AdWords system. To wit, sites that end in .edu, .org and .gov seem to have been untouched during the Florida update. Now Google may just be trying to balance out their overall listings by showing more content from information, educational or government sites than before. Also, Google may be giving more weight to links from .edu and .gov sites although this is just a theory at this point. Now whether a site is commercial or non-commercial is not a cut-and-dried issue. Many commercial sites have lots of purely informational content on them. Rather, Google may apply a "commercialness" weighting to a site based on the keyword mix found for a site. This weighting value would be different dependent on what industry the site was associated in.

PageRank is Being Replaced By LocalRank Traditionally, PageRank (PR) was calculated once a month for every page in the Google index. The PR score for a page was pretty static until the next time around that PR was calculated, and was computed based on ALL links that point to a page. Contrast this with LocalRank, which computes a link score based only on incoming links from pages that are returned from a given search result set that matches the search query (whether the result set is 100, 1000 or 10,000 pages is not yet known). Which means that a flower site only gets links counted from other sites that are related to flowers - not from sites that are about mortgage loans for example. This is similar to how the Teoma search engine does it.

Think of LocalRank has a dynamic PageRank score that is computed on the fly each time for a given search query LocalRank, Google hopes to filter out irrelevant links that has thrown the value of PageRank off in the past. LocalRank can have a big impact for sites that currently have lots of incoming links from sites that aren’t related to the linked-to page and whose favorable rankings have been skewed as a result of PR rather than on-page optimization (content, titles, headlines, etc). LocalRank takes a lot more processor power as a PageRank-like score is computed on the fly for every search query. This may also explain why running the Florida filter test (using excluded words in the search query) brings back pre-Florida results - it invokes the older algorithm that uses the static PageRank score which takes up a lot less server processing power. For those search queries that do not use exclusion words (and perhaps also for "simpler" queries), the new algorithm using LocalRank is used inste

Search engine optimization technique (SEO) is a to-do task to boost your online presence as explained in seo services.Stefano Sandano is a professional seo also for the italian language websites in posizionamento nei motori di ricerca .

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