I was talking to a friend. I claimed that it is very hard to find a decent sync software. He said I should try Memeo AutoSync. And I did, just to see that it is just another crap.
I made a sync plan with 2 folders (on 2 computers) that were already synchronized: names, timestamps and file contents – everything was equal. But Memeo AutoSync started to copy files from one folder to another. I was already worried that it could mess something up with my files, and impatient. But I decided to be patient and to wait a while. I just thought it was over, but then it started to copy in the opposite direction! That was too much for me. I stopped it. And uninstalled it immediately, and for good.