Is link exchange with websites of same niches a white hat technique? How can I find the same niche websites?
aproxaday I feel has it right. People are so concerned with google slaps that they forget why people link to other sites to begin with. People link to sites that are related and useful to their visitors. Google understands this and they would never penalize someone for doing so, its the sole reason why backlinks were ever included in their algorithm anyway.
What I don't think is effective is straight up link exchanges. If you are going to do it try to do a three way link exchange or place the links inside of content. Blogrolls are becoming less effective when link exchanges have occurred. I would much rather trade blog posts with links inside of them than trade blogroll links where its not only more noticeable to Google, but also doesn't look spammy to website visitors.