When you make a page crawl in Google Webmaster Tools as Fetch as Google a Error or a Redirect message appears.
Google Gmail Error Bad Request Your client has issued a malformed or illegal request while trying to access gmail.
Oops you just clicked the Send Email (in Gmail) in a hurry, before it was complete! Well you can Undo this by adding the Undo Send feature under google Labs Option.
Gmail Chat can be turned off from Chat Settings. Here is a quick image walkthrough of how we can turn off Google Chat (Gtalk) from Gmail.