I think a shout box would really help the site out. It wouldn't attribute to much but it would be a nice feature.
This has been discussed before, but was turned down. The forums are due a major upgrade in the next few months (we hope) and because of this no further mods will be installed until after the upgrade. A shoutbox will be reconsidered at that point.
But will most likely not be implemented. Game comments are already filled with support requests despite clear message that such is not allowed. A shoutbox would be, if possible, even worse. For chat join our IRC channel or use the forum.