If the web mail account uses HTTPS, you're safe.

Otherwise, you're probably at risk.

Open wifi networks are easy to intercept from some distance away - this makes them very risky. If you're using an open wifi network (for some reason) you should be mindful of this and not log on to any non-HTTPS site which requires a password etc.

Unfortunately some sites (possibly including AO) may use cookies to remember who you are - if you even *visit* such a site over HTTP on an open wifi connection, your account may be compromised.

Slarty