Scrolling in Inline Frames (like Google Reader)
This was frustrating for me, as I read most of my tech news and follow damn near all the LOL sites in Google's Reader. http://reader.google.com
Well, it uses separate frames for different areas of the site, including the list of feeds and the actual feed.
First thing you have to do for Google Reader to function properly is make sure you have "Desktop" selected as the view. It is a link at the bottom of the page. Otherwise it treats Safari on the iPad as a mobile browser.
Second, when you use 1 finger to scroll, the whole page scrolls, not allowing the frames to move on their own. Use 2 fingers instead. Same motion as one finger.
I borrowed this from:
iPad tips and tricks | Mobile Dev Zone