I was asked to remodel a website, and decided to check its rank on alexa. Surprisingly, there are many, many different websites linking to it, none relevant.

One particular thing about it is that none of these urls work, and they all display the exact same error when accessed, which to me is a very good indication that this is some sort of linking scheme. (besides the somewhat obvious names, it even says scheme in one of the urls !?)

If so, how should i proceed about this website? What can i do if this is in fact a scheme, how can this hurt the website, what types of problems can i face, and what can i do about it?

addurlnow . info
dirlist15.addurlnow . info/Business___Economy/Services/page-12.html 

linkdirectory101 . info
dirlist16.linkdirectory101 . info/Business___Economy/Services/page-15.html 

seonetblog . info
dirlist52.seonetblog . info/Business___Economy/Affiliate_Schemes 

addurls . us
dirlist21.addurls . us/Business___Economy/Services/page-10.html 

webdirectoriessite . info
dirlist20.webdirectoriessite . info/Business___Economy/Services/page-6.html 

addurlstore . info
dirlist10.addurlstore . info/business___economy/services/page-14.html 

ukwebdirectorys . info
dirlist21.ukwebdirectorys . info/Business___Economy/Services/page-13.html