I'd like to ask 2 questions regarding correct Nofollow tag usage.
The role of Nofollow links and the way Google are handling them has been changed more than once during the years - so I'm a little confused when it comes to implementing the tag:
1. My domain is offering, among other things, widgets for webmasters. At the bottom of each widget there's a visible to Search Engines HTML link. As we all know, Matt Cutts has specifically mentioned that these kind of links can hurt us:
Is tagging the links with Nofollow enough? How to address this issue when getting a new link (next to a widget) from a quality, authoritative new site? To your opinion, what's the best practice in such case?
2. In one of the site’s main sections, there are about 1000 pages linking each to a high quality - government site as references (The domain has about 13M pages indexed). These are quality, authoritative sites. From a user point of view, linking to them is important and gives the site credibility.
Should I place Nofollow on these links, or leave them as they are? Again, what would be the best practice?
If you are willing to nofollow the link you include in the widget, why not just delete it? Widget links can be very dangerous if they are not managed properly. I would not want to gain 100,000 nofollow links from unrelated websites overnight and that is possible with widget links.
IMHO There is no reason to nofollow a link to a quality site ASSUMING it is not manipulating (or could appear to be manipulating) Google rankings.