One of the things Google does well is integration that makes sense. Take the new enhancements to Gmail And Google Talk. For everyone who thought that we didn't need another talk client May I humbly present = "Gmail Talk beta. I knew they had something up their sleeves. And the integration is both seamless and easy. This is what makes Web Applications done right such a beautiful thing. I just log on one day and boom my wife can IM me an important message with no work on my part whatsoever.
- No client to install.
- No configuration option to set up.
- No service to sign into.