docbird - 12:32 am on Jul 9, 2011 (gmt 0)
I only very recently started w mobile versions of my sites, using Drupal Mobile Tools module. Much easier than I'd thought this could be; not perfect, but likewise focused on main content.
With it, could switch off various blocks, so trimming down pages for mobile; also got rid of horizontal leaderboards, opted for slimmer and smaller adsense displays. Include travel info, which seems esp well suited to mobiles.
Also just seeing around 10%, tho on way smaller visitor nos than typical webmasterworld folk have.
Found that I can get report for a year ago, inc mobiles(more like 2%); and mobiles listed for 2009 but no results for them.