The title says all.
Do you mean like an iPhone app or something like that. And today a lot of mobile phones has 3g network or Wi-Fi. But I do agree a tiny bit. But I don’t really think that this will be very useful for mobile phones without Wi-Fi or 3G.
The forum is mobile phone friendly.
The rest of the site would be a lot of work and won’t happen in the near future.
I use the forums on my ipod!