Few things I like: 1. It lives within Gmail. Generally its very difficult to attract people to whole new thing, while its very easy to make them do some differe

Few things I like: 1. It lives within Gmail. Generally its very difficult to attract people to whole new thing, while its very easy to make them do some differently which they are already doing. 2. Nice integration with Reader. 3. Nice location based features. (I think Twitter is currently working on this. They acquired some company for the this purpose).