I'm always on my iPod touch while browsing the forums. It's just come quite the addiction too, i have to admit xD. However, it gets frustrating when I'm trying to post a quote; the button quotes it 3 times so I have to deleted the same sentences twice to get it back to one quote-paragraph. And then when I'm trying to colour (etc) some words/senrances it's very hard to do so because I try to scroll up but I have to scroll to the side to do that first because it just makes me rage.
In other words: there is floors to typing on my iPod - mobile device, but it's all worth it in the end.