Nope, the site was working just fine, except that some retard who kept flooding it with profanity and other crap. His sole purpose in life was to make the site unusable to others. Motives behind that could be only guessed. My guess is that someone didn't like the honest and informed discussion that happens at moo.
To expand on this, there were two spammers, which may have been the same individual. The first would pop up and crapflood the messageboard with one-shot nonsense posts. That's being going on for many months.
More recently, a second spammer appeared, who would mass inject threads with the alleged intent of "clearing out" the other spam by pushing it off the index. Which, of course, it didn't, it simply compounded the original problem that regular threads were lost amid the noise.
As a long time reader of the board, I got a bit sick of this and wrote a simple filter which I hosted on my own server that filtered content based on repetitive subject titles (with some logic thrown in to catch minor variations thereof).
I used this for a little while and decided to share it as the volume of regular threads was diminishing, due to the constant crapflooding making it tedious to locate recent posts.
The second spammer decided this was an unacceptable affront to his right to subject everybody to his crapflooding and that, despite only using the content of the index (which does not show user or IP address), that it was somehow it was targeting him.
He tried a few trivially-countered variations before recognising the fact that a repetition filter won't handle completely random spam and subsequently flooded the place with that, instead.