How Do Search Engines Compare
Dogpile published a paper
that concluded that searchers did not always find what they are
Key findings in the report claim:
You cannot assume that all top four search engines source the same
content based on a single search phrase. The total results unique
to or shared by:
- One search engine - 88.3%.
- Two search engines - 8.9%.
- Three search engines - 2.2%.
- Four search engines - 0.6%.
Search phrases with more than one word have a far greater chance
of finding the required content. The amount of best first page search
results excluded by searching each search engine:
- Google excludes 72.7%
- Yahoo! excludes 69.2%
- Live excludes 69.9%
- Ask excludes 73.0%
This indicates that the majority of all first results page results
across top search engines are unique. On average, first page search
result pages unique to:
Search result ranking differs significantly across major search
engines for both sponsored and non-sponsored searches. Agreement
of search results across engines for:
- #1 ranked non-sponsored search - 3.6%
- top non-sponsored search - 0%
- top three non-sponsored search results - 61.4%
- top five non-sponsored search results - 74.9%
This indicates there is little overlap of sponsored links between
Yahoo! and Google. The overlap for:
- Given query - 4.6%
- All queries - 22.8 %
- Queries where Google returned one or more, and Yahoo none -
Just to add more confusion to your SEO and SEM campaigns!!
Sitemaps for SEO
SEO Index | Search
Engines | Google Page Ranking
| SEO Testing | Optimization
| Keywords | Using
Videos | Using Sitemaps
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