This is not a quiet, private back bar where you can gossip to your hearts content about whosoever and whatsoever you want. This is a very public place, read by many with much more to gain and lose than many of you could possibly contemplate. Notwithstanding the site's title of rumour network, you are constrained by the laws of the UK (where the site is 'published'), and probably also by the laws of the country you contribute to this site from, as to what you can and cannot say in public.
The fact that CC may be a lovely lady who wouldn't knowingly hurt anyone is not a legal defence against libel. Naivety may be endearing in some circumstances, but this isn't one of them.
Push the boundaries of what is acceptable only if you are fully aware of, and prepared to take, the legal price you may have to pay!