Sharing on public postings in Google+ has sometimes the same bad effects as crossposting to many newsgroups on different servernodes in good old usenet.
Question: Might it be better to link to other public postings instead of sharing it?
Animated gif below illustrates a real sharing usecase:
wrotes the first start posting, after some discussion reshared it. than I wrote a followup to Serafinas reshared posting and somebody other rereshared Serafinas reshared posting.
Url to the real sharing usecase: