I use an App called Forum Reader Disney Forums,for my HTC, its not the best but better than nothing, you can reply with it, even though it always tells you it hasnt worked, it always has, its fairly quick and I can see all the up to date posts
I also have this app but I actually prefer using the boards on Safari on my iPhone. Don't get me wrong, it's not great, but I prefer over the boards version on the app.