Gmail Labs now offers you to preview your flickr,youtube,picasa and yelp stuffs to view in chatÂ
YouTube:Shows a video preview whenever you receive a YouTube link in an email. You can watch the video right inline!
Picasa,Flicrk:Â Shows photos previews whenever you receive a Picasa,Flickr link in an email.
Yelp:Shows previews of Yelp listings (rating, location, phone number, etc.) whenever you receive a Yelp link in an email.