The team at Basecamp / 37 Signals has always seemed a little resistant to launching a mobile version of their services but maybe they were just making sure they'd properly researched everything. Basecamp for Mobile has launched and I've no doubt it's a great experience across all the platforms they advertise for - iPhone, Android, BlackBerry. It's great they went the web route instead of deploying separate apps for each platform; now they'll be able to speedily deliver upgrades and changes to everyone.