There are some services out there that are updated by Google Talk statuses.
Some people like to set their their location on their IM status, like "I'm @home ".
So why not allowing checking when setting GTalk status message using the configured placemarks on Brightkite?
How about IM update from GTalk in the same mode as the email updates. For those of us on the move who can't use SMS yet, but can access GTalk (e.g. from Blackberry 8000 series etc.), it would seem like a reasonable halfway house. Email is OK, but I don't fancy having a load of sent messages in my work mail account when I could just be banging an XMMP message Brightkite's way :)