I missed the thread in question, but if he was posting an answer to a question,
even if that link was on another online RC forum, that seems to be allowed,
based on the rule you quoted above. Maybe the rule should be worded differently?
The rule states, among other things:
However, people are always welcome to link to any online resource, whether it's on our site or any other site, in order to share useful information with fellow members.
It seems to be worded more to keep people from posting links to come join
their "awesome new forum", than anything else. Nothing wrong with that.
It does seem to allow for posting useful info in response though. Explicitly.
As for the four-letter words... dunno about that.
I have seen the word "*****" many times on RCU.
Why that makes it, and pu55ycat doesn't, one can only wonder
Afterthought... don't think I'm bustin on ya, darenm. I know it's a thankless job.
It's also one that makes it hard to please everyone, every time

Trust me, I know.