Print to Go is pretty cool, but limited. Having to have both PC and Playbook on the same wifi network kinda s**cks. I'm hoping an update comes along to change that.
Considering the OS being QNX and the need to be on the same network, I wonder what's so hard in implementing a print service directly on the PlayBook. I mean, a sub-100MHz embedded gadget can do that.
Also, being able to print (at least) on Postscript printers would be desireable.
Ubuntu can print as a pdf file. Copy that file to the /media/print directory on the playbook. These files will show up in the Print to Go app on the playbook.