For example, I have 10 links from blogroll. But I want to add 5 links to "nofollow", 5 links is dofollow. How to do this? Thanks.
I don't think so either, unless you add the blogroll links manually in the template instead of the wp admin.
Yes just create a text widget and add the urls by hand. Will look something like this <ul> <li><a href=http://www.site.com rel=follow>Anchor</a></li> <li><a href=http://www.site.com rel=follow>Anchor</a></li> </ul> Code (markup):