A lot of people are using many services provided by these giants (Adsense, Analytics, Site Search, etc.). It would be great if there was a way to login to your Google account through the WP Admin, similar to the PHPMyAdmin plugin that lets you log in to that service. It would be a great way to admin your google account that you use with WP. This could lead to other uses of Google/Yahoo services that aren't being used (ie. Spreadsheets, gmail).