This Wired Magazine blog points out a potential security problem if you read your gmail on public wireless networks. If you aren't interested in computer security and just want to cut to the chase, here's the fix:

To prevent hackers from accessing your accounts, change your gmail settings so that gmail always uses https:// (unless you always use a desktop and a dial-up connection):

• Login
• Go to "Settings"
• Scroll to the bottom of the "General" tab
• Choose "Always use https" under "Browser Connection"

As of August 19, NTAP's Google Apps-based email accounts don't have this setting, but the Official Gmail blog noted in a July 24 entry, Making Security Easier, that they were "in the process of rolling this feature out to all Gmail and Google Apps users." They suggest that Google Apps users who are concerned (and who are reading their email in public wireless settings) type out their secure https connections manually in to the address bar, e.g. "https://mail.google.com/a/example.com if your Google Apps domain is example.com."