This shoutbox may look nice. But there are numerous exploits that can be done. Such as making an IP logger an image and logging everybody's IP at once. Or spamming the shoutbox with hi res images to crash the server
Martec is also a fucking asshole and refuses to give any support when it comes to this plugin. My advice is to customize this so it has better features. But half of the features implemented right now are only because me and an owner of another site argued with Martec for days about why it should be implemented.