Infra-red is a little outdated don't you think? I think people would exchange business cards, v-cards and what not via bluetooth? Though iirc N900's infra-red was detailed somewhere that it does not follow the regulations of the IRDA hence the lack of infra-red apps except for instance qtirreco .

As for google maps, there's no official ones from google which is a given. However there's GeePS (available from Extras under PR1.3) which utilises google maps.