The idea of a continuous client is something that has sent nerds’ hearts a flutter for a long time. No matter what device you pick up, you’ll have an up to date conversation log. Now that Apple has released a beta of their Messages (formerly iChat) app, iMessage is more accessible than ever. (iMessage is the protocol, Messages is the app.) I’m toying with the idea of dropping AIM for straight iMessage. If you get an iMessage on your phone, it comes to your Mac, and vice versa. You can n...