Salesforce.com by Email

Here's an promising-looking concept. XtendCRM lets you send an email from any device (cell phone, PDA, email client, etc) and retrive phone number, email address and/or
street address information about any contact in your Salesforce.com database.

You must be a user of the Enterprise Edition of Salesforce.com. I'm currently testing it using my Motorola V710 on the Verizon Network.

This looks like it will come in handy for quick lookups on the road.