Picasa and Google’s little secret, and it sure as hell shouldn’t be. Picasa is a way of storing and indexing your photos. Hello is about interacting. Hello was created as a way to share those photos Picasa spent so much time indexing, but it does so much more. Do you want an instant messenger from Google? Well, Hello is an instant messenger, complete with buddy lists and bots and smilies and sounds. The difference is that Hello is optimized for sending photos. It can automatically resize a photo so it sends properly. You can jump back and forth from Hello to Picasa to send your photos and share your albums. But most strikingly to most of my readers, it is an instant messenger in a Google product, and its a good bet that as Google integrates Picasa better with the rest of its services, Hello will be its chat client, with full feature support for Gmail and Google Desktop. And if you are worried about security, Google claims it’s more secure than AOL Instant Messenger.