I'm not sure about other phones, but on the iPhone I can't stand
mobile sites. The iPhone handles real websites just fine and I would
prefer to view and navigate the real site, rather than a crippled
mobile version. Because of their limits, I feel that mobile sites are
less efficient than full sites. This seems contrary to their
purpose. There are a few instances where mobile sites work well, such
as web based email, but for the majority of the internet, I'd rather
use the full site on my iPhone.