This is a cool move and one I have a feeling will do quite well. Wedding planning women (primary audience) are known to be somewhat compulsive in their quest for information. The Knot already has a great target group and they can easily market this to members within likely Comcast neighborhoods. Even if this is primarily advertorial (ala Scripps TV), I think it could do very well if done right.
Last year The Knot inked a video-on-demand deal with Comcast, now the wedding website announces it’s launching a 24/7 online video stream. [Lost Remote]