I'd say: Mint Powerset (though only because of permanent beta) TripIt (awesome!) Flock (for some, not me) Xobni And with a decent effort, any of them would ha

I'd say: Mint Powerset (though only because of permanent beta) TripIt (awesome!) Flock (for some, not me) Xobni And with a decent effort, any of them would have been just as successful without TC40. (Though TC40 could very well have helped them quite a bit.)