I changed my wp blog to Dofollow now. I have got few people requested for putting their link back to my site.what should I do? On what basis I can accept the links??How to check their links and believe them?
I am using nofollow for my blog to avoid most spam, but I feel like it would be wise to accept garden-variety links through comments. As long as the people leaving links are contributing somewhat to the content of your site, I don't see any disadvantages.
You can change to dofollow to encourage more comments on your blog. However, I would recommend to being selective to prevent any linking to "Bad-Neighborhood". It won't worth enough for a long term anyway.
You have to make sure that their links are relevant to your niche. Then you will have to check their site and find out the PR of the pages you are linking to. If it is lower than yours, I think you can be selective.
Suggest to change to nofollow. And friendly link is not the mainstream way to bring traffic and improve ranking