It seems to me, as a user, that the site is under attack - although we have no details about the internals.
The server outages over the last days - at all times of day, look to me like "denial of service attacks". The spamming attacks are not just normal spam - the spammers are going through all the folders with their spam. They do not seem to be trying to really advertise, but to deliberately vandalise the site.
In short, these seem to be criminal acts which should be taken seriously.
Am I right in these conclusions?