Service Name: 411SMS
Text to this number: 87411 ("US411")
Finds the nearest free WiFi hotspots. Just type "wifi" and your location. If you are in your home area, you can even omit your location since 411sms detects your home city based on your phone number.
Service Name: 4INFO
Text to this number: 44636 ("4INFO")
Just type "wifi" followed by your zip code, city or address, and get a list of nearby WiFi hot spots and whether they are free or cost something.
* Don't forget to bookmark this page for future reference.