There is a lot’s of site that called “cloud links sites”.

cloud sites are offer you a link back from hi pr page and lot’s of webmaster are still looking for link back from hi google pagerank.

google engine are more smart this days then ever and know that webmasters try to trick him so google develop a new algorithm that called google trustrank algorithm that not only count the link back pr but mostly important look at google trustrank score that this site have.

cloud sites have lot’s of links out in a single page with unrelated sites, as no content at all and looks like a link farm (well not just look like link farm - they are a link farm ).

this kind of sites don’t offer anything for users and they only design to improve your site page rank.

the truth is that this kind of sites will not improve your google page rank because there is a lot’s of links out from the same page that is better to have a pr1 link back from related sites then this kind of links.

also your google trustrank score will get a negative score and your site will surfer from this kind of sites.

so next time you will see a link cloud sites, stay away from them !