I'm not "concerned that people here post elsewhere", as you put it. But you seem to open particularly well up elsewhere.
So you are Israel??? Say hello to Butler from me, Zviadist :).
Are you the Intenet police?
Do you really think there is such a thing, Zviadist? Geez. I'm just someone who document what he sez ;).
Once upon a time, that sort of behavior might have been frowned upon as a breach of the "keeping it clean" or "jumping threads" rules and been deemed extremely poor posting behavior.
Although not specifically stated anywhere in the site's policies, the leadership of FR has made a habit of using posts from other sites either to publically impugn the reputations of some posters as "AF-ers" and or summarily ban others from this site.
It is of no moment whether or not these outside posts are signed with one's own handle. Upon the advice of "informants" or one's own subjective opinion, posts believed to be this or that individual targeted for destruction or already erased will stand as sufficient grounds for the nuking of a poster and erasing of all of his posts from the memory hole.
Therefore, the use of signed or anonymous posts from other sites (taken out of context or not) in an effort to impugn, cow or silence Zviadist is a perfectly admissible and absolutely proper tactic.
I would laud Cachelot's having the stones to use this tactic out in the open--as opposed to the behind-the-scenes Byzantine backstabbing and informing that's all the rage--but I know better. He and others are not being "honest", they've just been empowered such that they can post thus in broad daylight with all due impunity.