Re: drummerworld app
Usually a mobile site is a separate rendering of the same information.
It's fairly simple to do but I can appreciate why Bernhard may not want to for Drummerworld. I'm not sure vBulletin 3 can be easily re-rendered, given how old the implementation is.
I tend to only browse occasionally on my phone. It renders much the same as on your phone BTC but it's not a big problem for me. I can appreciate why it might be for others but ultimately it's up to Bernhard and it's absolutely his call.