PC Pro: News: Yahoo! ups limit on its Mail service to 1GB: "Yahoo! Mail is to increase its storage capacity to 1GB. The move may not be entirely unconnected to the fact that Google's Gmail is widely expected to become available to anyone from the 1st of April - one year to the day since its launch.
The current storage limit for Yahoo! Mail until now has been 250MB. At the time of Gmail's launch it was 4MB which was raised to 100MB. Last November Yahoo! raised the limit again to 250MB."