What is the difference between Do follow or No follow links ?

[plccourses]

dofollowlink means to click the hyper link available for a vital information. While, donotfollowlink is the opposite.

[tomandjeny]

Do-Follow:
>when google bots are crawling a website they look for external links point to other websites.
>If this links is "do follow" then search engine will follows the link juice gets passed.
No-Follow:
>attributes used to prevent a link from passing links authority.
>commonly used on sites with user generated content, like in blog comments.

[Chris_Tax]

I focus on leaving comments on Do follow sites. It is a time issue. SEO takes countless hours and you need to focused on your marketing plan. Run your business proactively , prevent problems and plan ahead. Also, target your target customer base