I think we need to clarify exactly what you are asking about.
What is a "no do follow" link?
There are ordinary links, like
<a href="http://www.example.com">Anchor text</a>
Which will be followed by robots by default and may pass Page Rank.
And there are links marked as "nofollow" like
<a href="http://www.example.com" rel="nofollow">Anchor text</a>
These will not be followed by (conforming) robots and will not pass Page Rank, like the links you may find on this forum don't, if you look at the source.
There is no "do follow" link, and no "no do follow links".
There are just plain links and "nofollow" links.