Is link exchanging a SEO service? If it is a SEO service where can I find these services for forum exchanges? Site is in the sig.
Sorry but I did not get more clear about your question. But still trying to give your answer as under. you can search direcotries for the same. but if possible ask this question again so I can give you more clear idea about that.
Yes link exchange is a part of SEO and it is very useful for site ranking if you do good quality link exchange (in terms of PR and site theam)