KDE is more and more about mobile devices. There are forums with topics covering mobile incarnations of KDE interfaces (Active) and applications (Calligra Active).

Having that, forum.kde.org isn't currently usable for mobile devices, for the following reasons:
- wide pages - unreadable even in horizontal device's orientation
- small, finger-unfriendly links are present instead of larger button-like links
- the black nav bar scrolls up and down (covering the content) while the content is panned
- any drop-down buttons should not navigate out of the page after clicking on them because clicking is the only interaction method on touch browsers: e.g. tested with opera mobile: clicking on the black nav bar's 'Feedback' (to just drop-up its context menu) reloads the page; this also happens when trying to access the 'Top' button on the same bar (on the right hand).

For the above UX tests I only tried reading features.

I know m.forum.kde.org may be not the top priority at the time, but just let's have this wish here.
Reusing http://phpbb-mobile.com may be a good start...