When creating a post, the wordsocial boxes for Twitter, FB and LinkedIn are auto-ticked. This means that my new post will be auto-posted at those sites. This is OK with me.
However, when updating a post, these boxes are not auto-ticked. So I was under the impression that this means the updated post is not (re)posted to any site unless I tick its box. Wrong. I tick Twitter and FB only (and not LinkedIn) but the updated post is posted in an un-ticked site (ie LinkedIn) anyway.