Many people suggest and do follow the strategy of commenting on related niche blogs with links to their own sites. Is this legitimate and a good way for SEO? Or it has some harmful side as well?
I know that when it comes to obtaining backlinks, a no-follow is pretty much worthless. However, does Google (or other major search engines) penalize for sites that have nothing but do-follow links? ...
I have my blog website with alot of do-follow links posted. If i remove all those links do my search engine ranking gets down or not?