sebaro - 6:38 am on Aug 13, 2009 (gmt 0)

Hi
I have a web directory and I want your opinion about some types of linking. I do not allow reciprocal link exchange on my directory but there are some I don't know what to do about.

-> Product sites/companies that belong to the same group of companies and link to each other
- a company have a site for each product it sells, the company main site links to each product site which links back to the company main site.
- an international company that have sites for different countries that link to each other

-> Sites with the same content/design, in the same or different languages that link to each other
- realestate-city1.com, realestate-city2.com, etc
- a_company.com, a_company.com.au, a_company.de, etc
- en_domain.com, fr_domain.fr, ge_domain.de, etc

-> "Design(ed) by", "SEO by" site-wide links

About site wide links, is there a problem showing sponsored links on all pages of the same category?