GMail Unlimited

Last Friday, Google's GMail went to effectively unlimited e-mail storage. Officially, they bumped it to 2GB and are now continuously raising that limit for their most demanding users. In other words, you can have as much storage as their heaviest user and if you exceed it then you become the heaviest user and they'll raise the ceiling for you.

So, why not just call it unlimited? Well, because this way they can limit it if they need to. If too many people build up 100GB mailboxes or whatever, they can put on the brakes. Also, they get to have a counter on their main page that ticks up as the limit increases. Hotmail and Yahoo don't have that and probably never will.