If and when the author (including me, I routinely do that on OTHER websites I run, or contribute to!) of some web page, video etc.. tells you that you can copy it all elsewhere, by all means DO it. In all other cases, including “sharing” them on Facebook or similar networks, or sending the full thing via email, you do a serious disservice… not just to that author but, **above all, **to all the people with which you “share” that stuff.