The fourth World Wide War Drive has ended, and the resulting statistics include:
Unique networks in DB: 288,012
Networks with WEP: 91,050 (31.6%)
Networks without WEP: 146,688 (50.9%)
Networks WEP unknown: 50,274 (17.4%)
Networks with default SSID: 82,755 (28.7%)
link (Thanks, socalwug)