Creating a separate section of some kind might be a little premature. I've done a few Linux related posts and information that hasn't drawn much interest but if you can put something together, I'll definitely do what I can to help. If it really catches on, we'll start thinking about something bigger.
eh, i don't know enough about Linux yet to be of much help though. The only program i've found so far that's really looks portable is MiniTube on Ubuntu and seems like most of the rest are in some kind of tar.gz format and then you still might have to make, compile and all that stuff, which is beyond my knowledge.
i'm kind of surprised there isn't more interest in linux because its pretty easy even now to multi-boot or run Live CD's and most of the OS'es are free. in a few more years we should be able to add or remove an OS from the HDD as simply as copy/delete a folder or file is now.
It could maybe start with a sub-forum here for submissions and debate of portability on Linux...
i vote for this.