Let's (Google) dance!

Since a dozen portals of my clients have suffered serious consequences because of this phenomenon, I will quote here some news you find here and there to respect. If you plan to return in a similar situation, please contact me!

Lawyers from KinderStart.com, a portal dedicated to products for children, have denounced Google and claim a substantial damages: "Our main page has lost 70% of visits to fault a decision arbitrary and little transparency on the part Google ".
KinderStart claims that the engine Californian would have lowered the page-rank of the company website, used by Google as a criterion for calculating the visibility of a web page. Although partial and certainly not very effective in describing the quality of a website, this "index" is advertised by Google in various ways, for example with its toolbar. According to lawyers of the U.S. site this creates a false suggestion on the effective popularity of the site itself.
Punto Informatico

Google is not looking face to none when it comes to borderline practices to gain popularity: Mountain View take very seriously their PageRank, and all activities suspected to use subtle tricks end up early to cause a downgrading of the site that are trying to promote: jargon we say that that site was hit by a Google Penalty. [...]
There are many other situations which may lead to downgrading: a Google Bomb, material copied from another site, a page link.htm zeppa of strategic links etc. The experts now prefer to talk about filters, given that the techniques used by BigM have made increasingly sophisticated and are able to cover a wide range of possible tricks.
Atuttonet

Interlinking From Same Ip. Interlinking mean when webmasters link all sites of their property even if they have not relevant content, many sites link with the same ip is considered by google something "bad" then this may be one of the reasons for that many sites have been downgraded.
I Maledetti Contest. I think google is not pleased that a site uses this marketing strategy to get an avalanche of backlinks, a esepio striking may be Gekissimo that with the contest of nokia really got a lot of popularity and backlink, and perhaps was downgraded for that. (as well as to sell links)
Selling Links. Be this is known, all are against accandendo text links ads, but the problem riguara all networks of this kind, even Linklift service buying and selling links used by many Italians, to remedy this problem enough that owners of the network inserissero attribute nofollow links bought, but doing this comprerebbe more about a link?
Trains and more. If we read the rules of google webmaster guidelines in the city that a web page should not contain more than 100 links, unfortunately trains launched from sites, easily exceed that number.
Soldiweb