Google has been doing some major housecleaning: The web giant announced Wednesday that it would be shuttering Google Labs, an online incubator of experimental products. Thursday, Google alerted its users in a brief blog post that it was effectively phasing out its Google Toolbar for Firefox, a feature that users could install in their Firefox browser for easy access to Google.com, Gmail, sharing, and other services (See screenshot below).Google wrote, "While Google Toolbar for Firefox works on versions up to and including Firefox 4 only, it will not be supported on Firefox 5 and future versions."The company attributed its decision to stop developing the tool to improvements in the Firefox browser, noting, "For Firefox users, many features that were once offered by Google Toolbar for Firefox are now already built right into the browser."Read More... More on Google