Hi Giantuca,
Thanks a lot for your reply. I understand now. When I was asked to change that back link to no follow I thought there was some problem with my website in fact.
My blog is tripsetc.com/blog and has not been penalized by any search engine so as it was the first time I encounter that situation i was puzzled.
Thanks again. BTW Noticed you live in Valencia an Awesome city with a good Soccer team.
Best Regards.
Sherif