I have a pr-5 Do-follow blog. Now a days a lots of people are asking me to exchange links with them, so of these site have less PR or with no PR. I am puzzled , what should i do. Kindly guide me.
I think that this is something you should decide one a site-by-site basis. If you think that the site that wants to exchange links with you would be beneficial, even if they have a low PR, then do it. I would first look for sites that are related to your own topic and see how active their community/visitors are. Even if they have a low PR they might get tons of visitors and comments or they might be a newer site and could end up having a higher PR in the future. You could also try and encourage them to advertise on your site instead of just trading links.