Search Giant Google, confirmed on Tuesday it has begun a limited test of a free wireless Internet service, called Google WiFi. The software is available from certain Google Wi-Fi locations in San Francisco. It's not clear how expansive Google Wi-Fi will be as a network -- the company won't comment about its future plans. But whatever areas it eventually covers, Google Wi-Fi will likely be free and supported by ads reports Information Week

Google spokesman Nate Tyler said the current test is limited to two public sites near the company's Mountain View, California, headquarters -- a pizza parlor and a gym -- located in the heart of Silicon Valley.

"Google WiFi is a community outreach program to offer free wireless access in areas near our headquarters," Tyler said.

"At this stage in development, we're focused on collecting feedback from users. We'll determine next steps as the product evolves," he said.

Tyler said the project was started as part of a Google engineer's "20 percent time project."

The Google Web site has several references to Google WiFi but provides few details. One page (http://wifi.google.com/faq.html/) refers to a product called "Google Secure Access," which is designed to "establish a more secure connection while using Google WiFi."