Microsoft and Google are involved in an EU competition dispute Google has the most recent changes to its search system, this will reduce the prominence of some popular sites defended.One of which was worst affected by the "Panda" update Ciao.co.UK, a Microsoft owned company, the a EU competition case against Google leader was.
Web visibility declined from 94% to analysis of Searchmetrics.
Google head of search evaluation, Scott Huffman, said it was "almost absurd" indicates that the results were tampered with.
The company regularly changes the algorithms that determine what users see when they are looking for.
RankingsThese updates are often taken to weed out "Content farms" - sites that copy material from other sites to obtain results.
Where a keyword search before their website on Google's first page may have returned, it can then further down the rankings be relegated.
If the update was known as Panda, rolled out worldwide on 11 April, published Google blog post explains that it developed was to "Reduce the rankings for low-quality sites".
Shopping and price comparison sites such as Ciao.co.UK suffer sometimes, if Google do not change algorithms since they replicated bear comments and reviews elsewhere on the Internet.
However experts say that there is a legitimate for unusual site so bad like Ciao hit.
"A decrease of 94% astronomical,", said Sanjay Shelat, a search engine optimization (SEO) specialist in process optimization.
"It is very unusual for such a hit in an update." "That's enough to a company under."
Searchmetrics claimed that the search visibility of Ciao.co.UK of 94%, fell after Google update panda. Competition caseCiao.co.UK was involved in an EU investigation into Google in November 2010.
Parent company, Microsoft, claims that its dominant position to rival Google limit products has used.
The BBC asked Microsoft if the downgrade Ciao thought results, it was related to the legal action, but Microsoft said it would not "at this time" commenting on the situation.
On the question of news agency AFP, Google's Scott Huffman said: "If you we're talking about the extent of thinking of what, it's almost absurd to say we could manipulate the results."
Mr. Huffman pointed out that the update had received a very positive response from Google users.
Search visibilityAnalyzed, before and after the Panda update Searchmetrics Google results in response to a series of keywords.
In addition to Ciao 94% less visibility found it that hubpages.com fell by 85% and eHow.co.uk 53 sank %.
A similar analysis of Sistrix found a decrease of 81% visibility for Ciao.co.UK, 72% of hubpages.com and a 84% fall for eHow.co.uk.
During a drastic reduction in the visibility, a crisis for some sites and their search engine optimization (SEO) can be engineers, is it not necessarily mean disaster.
Technology news site Electricpig.co.UK was 94% by the Panda update, according to Searchmetrics reduced.
Site editor James Holland told BBC News: "We have not seen direct impact."
"Comparison of our traffic from Google for this week, we are only after bottom 0, 5% compared to the week before Panda came into force."
", Suggests the keywords, the business still is that we measure Searchmetrics against which most were anyway not clicked, and our most powerful things."
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