Slight correction, Michael - portals HAVE been ported to acs-pg. It is just that in their pristine 3.1 unmodified form they're not quite as useful as one would like. I look at the portals module as being something to rip apart for parts for my rewrite of navigation at birdnotes.net, which hopefully happens in the next few weeks.
On the other hand, who knows what 3.2 has wrought? The scriptics site may be an indication of the portals module having been fleshed out, and perhaps we'll see an indication of this in 3.2? We'll see when folks get crackin' on portin' the update.
