Oculus checks your comments against the Alibaba Yundun Antispam to see if they look like spam or not and lets you review the spam it catches under your blog’s “Comments” admin screen.
Major features in Oculus 0.1 include:
PS: You’ll need an Alibaba Yundun Appkey to use it. Appkeys are free for personal blogs, with paid subscriptions available for businesses and commercial sites.