Comments are now allowed on posts. There is a 14 day window set up to communicate in this way. A more formal chat or forum system will be added later. Comments were one of the major attack vectors of hackers and spammers. If current defensive measure prove to be good enough I will open this up even further.
Message moderation works this way – your very first message is moderated. If it gets accepted all of your other messages will appear without moderation needed. This allows me to keep out 99% of the spammers. However we still ended up with some spammers in the past embedding bad links on the site. If you want to make it easy on me make your first post something pithy and interesting! That will go a long way in helping me pick you out from the spammers who usually try to post something with the text “I agree with everything said here.” So be interesting!