Yahoo! indeed is the king of email. With close to 100 Million unique visitors to email accounts every month (more than 2x as much as GMail; more than AOL, GMail & Hotmail combined), it definitely is solving the need of a large population which keeps returning. But good business today doesn’t necessarily mean that business will be good in the future. Other email providers are catching up and it isn’t a good sign when a new communication service being developed by one of the most visited sites on the internet (hint: Facebook) is considered to be a ‘GMail killer‘ and not a ‘Yahoo! killer’.