Thanks for your comment and the link to your post. Obviously, nofollow has changed a lot in the past few years! You may just have given me inspiration enough to write a followup/update post!

Best,
Nicki

For a while now I wanted to pour my heart out on Nofollow in a post of my own. I found your post while I was doing research for it.
The thing I wanted to comment on is:
I’m not sure that adding Nofollow to internal pages is useful.
When you add the Nofollow attribute to a link, that link juice does (!) leak out of your website. It just doesn’t get passed on to the receiving webpage. It kind of vaporises.
My post about it here:
http://www.michielgaasterland.com/seo/what-is-nofollow/

Thanks, & best,
Michiel

I don’t think there’s any one good proportion as far as incoming/outgoing links. The more incoming links, the better; and you wouldn’t want to have an overwhelming number of outgoing links on the page – ask yourself what are the best/most helpful for your readers.

Can I edit html at my page and change some dofollow to nofollow?
If yes, what I have to do?

Also, is there some proportion between incoming links and outging links? What proportion is the best?

You’re absolutely right. For example, I did not nofollow the folks over at eVisibility for the picture they designed.

However, I do think there’s a delicate balance between linking to credit authors and linking to Google Maps..Google really doesn’t need that link love!