> why not just mount it as the folder? Each computer sees those
> changes immediately.

Performance. While at home, with a fast and stable network connection, a mounted Pogo like you say works fine. While traveling however, hotel networks or coffee shops are flaky, up, down, stalled... Having a local copy, and syncing with Pogo is much faster in that case, and recovers gracefully from network glitches. On Windows, this capability is built in with the "offline Files" feature. I'm not sure if other OS's have a transparent online-offline mode like that. If not, just use any decent sync software which can Sync folder pairs. Sync, work fast and locally, sync.) This usage also allows you to work on a plane with no connection.

My desktop for example, might only mount the Pogo drive directly. It stays at the office, with a good network, on the same LAN as Pogo. Plenty fast. My notebook however, is a different story. It works on a plane, hotel, modem, etc... I sync what I need ahead of time, work locally, and sync when I can.

Exactly why I like a sync solution for some things (such as Dropbox can do), while other information (which may be too large to fit my laptop) can still be available as needed. Dropbox can do the first one, but not the second. Pogo (with one or more drives and a Sync application) can do the first and the second. Nice.

I wonder if something like crashplan would work for keeping local and syncing to pogo? I want this to......

The Pogo does let you set up folders that will automatically synce to the drive but it only goes one way. If you access the files on the PogoPlug, via the web or otherwise, makeing changes they do not synce with anything else. I really need PogoPlug to synce both ways and may switch to DropBox or SugarSynce to get this must have feature.