Google has again decided to shutdown some of its services like Google Mini, Google Talk Chatback, Google Videos, iGoogle and Symbian Search App. Since Google feels Google Talk Chatback is outdated, it turns it off and encourages users to integrate the Meebo bar on their blogs and websites.
Google last month acquired Meebo and now shuts down one of its services in favor of its recent acquisition.
Google Talk Chatback allowed websites to embed a Google Talk widget so that they could engage with their visitors. It’s now outdated, so we’re turning off Chatback and encouraging websites to use the Meebo bar.
In addition to this Google will also shutdown iGoogle, the portal, which allowed users to personalise their start page. iGoogle will be cut in November 2013
Source: Google Official Blog