I've also put the 'share location' button on the non-mobile site, so that it can be used on the iPad and other larger devices with GPS. We'll see what effect that has!
The good news is that it seems to work on several Android phones:
- Google Nexus One
- HTC Dream
- HTC Espresso
- Samsung Galaxy S
- Motorola Droid
- LG Ally
The new tool buttons are now documented in the manual.