Same here, primrose.
As it happens, I've changed my view about the media giants quite recently. When Facebook et al were first being called publishers I objected o that idea because, as I saw it, FB did not "publish" anything I put on my page; I did. FB enabled my publishing of whatever material I wanted to post on FB.
Now though, I think that the media giants of online communication have developed enough and have become powerful enough that new rules are needed. What goes public, what is put in the public sphere by groups like LeaveUK should be subject to the same sort of political campaign advertising rules as what's published on TV and in newsprint.