Coming online any hour now, Yahoo! has announced today is the day it will open registration for accounts in their new e-mail domains, ymail.com and rocketmail.com.

Why do we care? Insertnamehere@yahoo.com has hit the saturation point with some 266 million users (that's the most of any single e-mail domain, by the way. Microsoft comes in second around 264 million accounts and Google is third with 102 million accounts). In other words, if your name is Bob Smith then you are not likely to easily find a handy e-mail address on any of the aforementioned domains. Today's your chance, Bob, to make a play for BobSmith@ymail.com. Tomorrow will likely be too late.