at least for this topic Kamma of unintentional actions the link is erroneous, because the address for some reason refers to post 513
http://discourse.suttacentral.net/t/kamma-of-unintentional-actions/232/513
while the topic only contains 80 of them and that’s why this particular link doesn’t make the user land at a particular post but rather drops him off at its end
in fact all links have a way larger posts integer than the number of posts the topics actually contain and thus a user every time ends up at their bottom
another thing i spotted is that the last 80th post URL generated by the ‘share a link’ tool actually gives a link to a 81th post, which is non-existent
Kamma of unintentional actions
as if numbering got wrong somewhere along the posts count, because a few first posts share links are correct