I just signed up for Ironman Arizona. Gulp.
Ironman North America has an RSS (blog) feed where they post updates and stuff. I subscribed to it after I found out IM Couer d'Alene had sold out - they'd sent a "limited spots available" update about 3 days before they closed registration. IMAZ's "Limited Spots Available" post went up today.
Last night Todd (friend who's doing Canada in 2 weeks) talked me into realizing IMAZ was the right options for me, versus waiting a full year for Canada. Seeing that post made me realize I'd regret missing the opportunity.