Kudos to them. This feature was just a matter of time. In addition to the growing popularity of 4square-like services, exchanging contact info w/new people at

Kudos to them. This feature was just a matter of time. In addition to the growing popularity of 4square-like services, exchanging contact info w/new people at events & places has become less "What's your number?" to "Are you on Facebook?". This feature will make that sort of interaction much easier.