Zune Sharing explained

Some of the comments below indicate that the details of Zune sharing aren't completely clear. Let me walk through the Zune does and Zune doesn'ts...

Zunes have wireless built in. Zunes can thus set up "ad-hoc" (Zune to Zune) connections to one another. This enables the following scenarios:

You can search for nearby Zune owners to interact with.
You can send them a song, album, etc... for a 3-day/3-play trial listen. Songs come over with metadata and album art (neat). After the 3 days or 3 plays are up, the song gets deleted from the Zune on the next sync, but the info on the song stays in a "journal" on your PC for later purchase or acquisition.
You can send them photos for unlimited viewing (and these can sync back onto the recipient's PC).
The wireless happens to be wifi (802.11 b/g) but Zunes will not (at launch) connect to the internet via your home base station network. Zunes can not download songs over the air from the internet service. Zunes cannot act as telephones or personal teleporters.

Caution: Zune may suddenly accelerate to dangerous speeds. Zune Contains a liquid core, which, if exposed due to rupture, should not be touched, inhaled, or looked at. Do not use Zune on concrete. Discontinue use of Zune if any of the following occurs: Itching, Vertigo, Dizziness, Tingling in extremities, Loss of balance or coordination, Slurred speech, Temporary blindness, Profuse sweating, or Heart palpitations.