Selected answers from the Dumb SEO Questions Facebook & G+ community.
Sam Mah: Of course, there are values. If you refer to internal links, you create an impression on the page you linked to is essential to your target users. You need something extra to support that particular page. Without that supports, your current page is useless.😉
Trey Collier: Links ( normal do-follow) will most likely always pass the "link-juice" (a term frowned upon in some circles)
Their value may also be diluted by having multiple normal links to the same URL (one in content and one in Navigation)
For the users point of view, if it is beneficial, keep it. For the Technical SEO side, you may want to test making one a "nofollow, index" vs a normal dofollow link. In general I try to have only one link with with a normal to any given URL per page and have not seen any bad side effect for this general rule of thumb. TBH I havent tested the other way in many years.
Travis Bailey: Unless something has changed, Cutts went on record some years ago stating that they tend to put less weight on navigational/boilerplate links.
Marina Dolcic: If the link is of value to your user, then yes. It’s especially good to direct your users to pages that you prefer and keep them engaged
Richard Hearne: My guess is this relates to the first anchor text conundrum. I`m not sure if the tests that first showed this have been repeated or can be relied upon. It would be interesting to see if this has been retested in recent times, but if the issue persists there are some ways to get around this. There are some anti-SEO patterns that can actually be useful.
Is there any SEO value in having in-content links when the linked to url is already in the Navigation Menu? 
