The Shmoo group (Beetle pictured, blurry in real life) presented phishing using rogue access points. The demo showed a rogue access point serving pages and gathering usernames and passwords as they came in. This could become a real problem in areas where there is heavy demand for wireless access like airports. With an EVDO card you could be the only AP in the area. They are developing user tools to watch the the local wireless infrastructure and warn you when things are going pear shaped and it is really unsafe to connect in that area.