This issue of SEO MixTour is special. From now on, we will include a new section dedicated to SEO experiments performed by SEO MixTour analysts. Read on to familiarize yourself with our research.
Web CEO Editorial Team
Checklist for Image Search Optimization
Nowadays, professional search engine optimizers give much greater attention to image search visibility. Image search optimization is especially interesting to website owners or publishers with a particularly visual product (for example, art galleries, clothes designers, or furniture manufacturers). What is more, everyone knows a picture is worth a thousand words.
There are a limited number of factors that influence image positioning. Print out the below check list and be sure you’ve done all you can to have your images well-optimized.
Analysis of Backward Links Information Provided by Google, Google Caffeine, Yahoo! and Exalead
First, we’ve tried to find out which of the search engines gives more information on the number of pages linking to a site.
To make the test more interesting and representative, we’ve analyzed three groups of websites from the alexa.com top 1,000,000 sites list (http://www.alexa.com/topsites) assuming such groups will represent well 1) the most popular sites, 2) sites of medium popularity and 3) less popular sites.
So, our three groups each consisting of one thousand sites belong to: 1) 1-1,000 (top 1,000), 2) 500,000-501,000 (middle 1,000) and 3) 999,000 – 1,000,000 (last 1,000).
To our surprise (as we bet on Yahoo! :), Exalead left others far behind having indexed the largest number of links, i.e. 76% (top 1,000), 63% (middle 1,000), and 56% (last 1,000).
Google and Google Caffeine show us the smallest numbers of backward links — from 1 to 5% in all cases.
What’s interesting: An additional analysis shows that Google’s index does include most pages that place links to the analyzed sites (as we know from Yahoo! and Exalead results), but Google didn’t report such pages as linking pages.
Which means, Google indexes many more links than it reports to us. Is this a big surprise to us? No. We understand very well why Google is hiding the backward link information from its users. And Exalead can — if not arm the reverse engineers with valuable info — but at least give us the signals we need to obtain to understand if our sites progress well.
Web CEO Metrics
Here we are sharing the generalized numbers from our HitLens Web Analytics service. It covers 300,000+ websites from all over the world.
Global Search Engines (%)
This chart gives the idea of the market share of each of the three major search engines. The situation of search engine referrers is predictable. Google with its 79% remains the leading referrer and strenghtens its position by improving search options. Yahoo does not make progress, and Bing keeps its position.
Visitor Referrers (%)
You can see how visitors are being referred to websites. September 2008 is remembered as a critical point of the world economic depression. Since that time we’ve been watching a constant decrease of paid advertising. Instead, search engines and bookmarking became more popular visitor referrers.
Experts comment on image search optimization