For marketers, the new iPad tablet is a very promising ad channel. We’ve clamored for a decade for a mobile advertising platform that delivers news, messages and response with great reliability.

Transpera is a Mobile ad network that offers sleek, portable device offers consumers a viewing experience that rivals a laptop with the intimacy and relevancy of the mobile phone. The iPad can deliver Transpera’s pre-roll and post-roll video units, as well as Clickable interactive video ad units. This sounds interesting, but of course: TV and the web do such things routinely. What’s new is doing it interactively on a mobile device?

Apple’s bandwagon is a good place to chill. The touch-screen based iPhone mobiles and its app-friendly OS made cell phones high-functioning, and turned competitors into lazy copycats. The ubiquitous iPod did nothing less than revolutionize music consumption again — as well as inspire the iTunes store that today dominates music sales constantly.

Based on that track record, it’s not unreasonable to project a similar arc for the iPad. Advertisers who get on board quickly could be poised for a long happy ride.

What does the new iPad offer that the previous revolutionary device,  iPhone does not? iPad advertising enthusiasts believe the 9.7 inch screen will make video more visible, and the website content more readable. That’s particularly important in direct response television, where product demonstrations move the merchandise. Viewers are rarely impressed by what they can’t see, and you can’t see much detail on a tiny, two-inch telephone screen.

Because Apple is positioning the iPad tablet as a portable web browser and multimedia device, pundits predict a big flood of media apps in the near future, most of them already rolled out for the iPhone and iPod Touch.