I was investigating a site I want to buy and I found most of its links are from pages that link to it, but outside of the page body. Like this </BODY> <div style="display:none"> <a href="http://cokbaska.org/" title="Cokbaska , cokbaska , Cokbaska site , Cokbaska.Org , blog , seo">Cokbaska , Cokbaska site , Cokbaska.Org , blog , seo</a> <a href="http://cokbaska.org/blog/" title="Cokbaska Blog , Herkese Blog , Cokbaska">Cokbaska Blog , Herkese Blog , Cokbaska</a> <a href="http://medyatonya.com/" title="MedyaTonya , Tonya Haber , Tonya , Trabzon , Trabzon Haberler , Trabzon G??ndem , Tonya İnternet Haber , Gazeteler">MedyaTonya , Tonya Haber , Tonya , Trabzon , Trabzon Haberler , Trabzon G??ndem , Tonya İnternet Haber , Gazeteler</a> </div> </HTML> Code (markup): How did they put their links there? It happens in a lot of sites? They somehow managed to login and place those hidden links? You can see it here. http://www.scriptdungeon.com/ View the page source at the end you will find it.
Interesting that Chrome corrects the bad html the display:none would concern me more than badly formed html - hidden links are frowned upon and there are much classier ways of doing it. Without seeing the underlying scripts it's hard to say how they got there. Looks to me like the site owner is just trying to be clever - or was back in 2001. That's a really "old school" site.
But when I review the links of this site all of them are like that, hidden and with the same title. How is this possible, he is linked like that from thousands of pages.
If the links are really hidden to the human eye and only visible to search engines crawling the site, they could be a violation of Google TOS. However, footer links as suggested are very common and they usually replicate from one page to the next, just by saving the page as a new name.
I would stay away from them. As it is a way to sneak somebody links in the hope of preventing Google's radar. But do you think Google really doesn't know???? If you buy links from there you are risking yourself.