I do this only on Twitter and I don't think that's actually unreasonable. What I DON'T want to see, however, is someone sharing every hour, or DM'ing people, or share-connecting (having multiple platforms posting to each other...ie: IG can post to FB and Twitter, etc.)
I also share twice on all update days because the people that follow me are usually in the 25-40 year old age range. They work and, I am trying to find the optimal time to share to increase my views.
I only give direct links to individuals who ASK for it, otherwise...I can't stand that private messaging crap or even spamming on my public walls. I have exceptions to that ie: I have been making friends with people here and they shared MY work so I gave them a shout-out as well. This is an exchange and must be done politely...
mmmmm....boy I wish PW wasn't shutting down. >