Andy... I think this is a good idea too...
I think that it would be a good idea to
show all the social media icons after every post / comment in both Forums and Blogs. These are for our visitors to use, so seeing them there at the bottom of a post would act as a visual cue reminding them to use them.
Note that from a Blog post, the user must click on the Options button; whereas from a Forum they must use the More button.
Anne