Errmm!!! What does this button do? Well, I thought it was going to redirect a post to a social network, but I only just saw shared when I clicked it in a post. So where is it sharing to?

isnt this the same thing as following button ?

Well, it appears on post, hmmm..... I guess its somewhat same.

I think Seun has explained it here. Hope it helps.

https://www.nairaland.com/1872858/topic-sharing-nairaland-shared-topics

i dont see any reason for it as its the same as following. Except ofcourse there is other motives

Fellow Nairaland Members,
You can now share interesting topics with your
followers by simply clicking the (Share) button on every topic.
You can view all topics that have been shared with you or which you have shared by clicking SH or Shared(N) on the forum header. This feature is still in the beta testing stage, so please
report any bugs that you encounter to us on this
thread.
We hope you find this feature to be useful, and
perhaps even indispensable.
- Seun

Its just a silly invention, what's the difference between that and when you are following someone.