I have few websites with sponsors offers, each offer is linked via text link, so I was htinking if I have 20-30 links like this on my websites it's hurt seo rankings somehow or make less usefull for giving backlinks from that website to others. so question is should I use nofollow on each sponsor link ?
If you do you sponsers will probably stat paying less per link or you will not sell the same amount of adverting. Or the advertiser will find less value with buying from you. SO i would no sell adverting wiht no follows..... I would not pay... Just fyi