I too recommend Feedcircuit. There are lots of ways to customize this program. With the right tweaks (I can fill you in if you're interested), this program works great in portrait mode. Indeed, any html doc that is heavily text-based works great in portrait mode, either with the "fit width to view " option built into the stock browser (which is called "microb"), or else with Tear, which word-wraps automagically on many text-heavy sites (including many of the mobile sites you spoke of earlier).

As for implementing rotation, I'm going to have a look at the issues you're having and post in that rotation thread when I can. Sorry to have made this so taxing.