We had a (relatively new) user include 

> If this solved your problem, please accept it as an answer (clicking
> [this] ![enter image description here][1] ). I only say so because
> you're new and may not know your way around superuser and all other
> stack exchange sites.

to an answer to a newer user.

While, least to me, this [editing out that bit][2] was the right thing, what situations would recommending selecting an answer be acceptable?


  [1]: https://i.sstatic.net/w88OG.png
  [2]: http://superuser.com/posts/457084/revisions