Nice! I'm actually doing something similar in December, bussing though various cities in the States (thread at http://lesswrong.com/lw/e9t/the_wandering_rationalist/) before going, mildly ironically, to Australia. I actually think I'm going to be in Austin around the same time as you, though not for as long. I'll be reposting my message with dates shortly.
If you happen to be in Melbourne while you're in Australia, see if you can come to one of our twice-per-month regular meetups!
Hi LessWrong! I'm a LWer from Melbourne, Australia, and I'm taking a 3 month road trip (with a friend) through parts of the United States. I figure I'd enjoy hanging out with some fellow rationalists while I'm over here!
I attended the May Rationality minicamp in San Francisco (and made some friends who I'm hoping to meet up with again), but I've also heard good things about the LessWrong groups all over the United States. I'd like to meet some of the awesome people involved in these communities!
We've been planning this trip for a while now and have accommodation pretty much everywhere except for the second half of San Francisco.
Itinerary
If you're in one of these locations when I am, contact me! Either ahead of time or at short notice is fine. I'll be checking meetup posts and mailing lists for events that I can make it to as well, but if you happen to know of an event or meetup happening that fits the schedule, feel free to let me know in the comments.
Message or call me on 4242 394 657, email me at shokwave.sf@gmail.com - or you can leave a toplevel comment on this post, or message my LW account directly. Looking forward to meeting any and all of you!