Updated to warn that Samsung Phones are currently not supported.
It looks like Samsung use their own bookmarking system and hence the standard API calls do not work. I've downloaded the Samsung TAB module and will check if that has a bookmarking API calls I can use.
My first icon was a quick mock-up at low resolution as I didn't see the need for generating a high-resolution version. Anyway Google has forced developers to submit a 512px x 512px icon for the market place, so had to redevelop the icon to have a high-resolution version.