Yup the Welcome note just links off onto Discourse which threw me a bit. It’d be a bit more of a “welcome” to have a note about DiS (and any posting restrictions) rather than just slope straight off onto info about some forum s/w, which you’d have to do a bit of deduction to realise.
I’ll see if I can find where the welcome note is later.
This has now been updated http://origin.drownedinsound.com/news/4147116-contact-drowned-in-sound (it should work on the site without origin. at the start of the url in the next 3-5 days when the cache refreshes)