Is waiting a few days really that much of a killer? :)
Have you considered emailing the publishers and discussing the idea with them? Perhaps its something they've not thought of. I'm not sure what serving hosting and bandwidth costs would be like though, plus the rest of the physical infrastructure and web design to get it set up and maintained. If its a small publisher they may not have the budget for that, and lets face it, in the current economy, comics are a luxury, and luxurys are the first things set aside when cash is tight.