Starting next month, Yahoo Mail will go to one gig. Platform wars, Ho! Release in extended, I don’t have a link for the news, save the mail site, which does not mention it yet. One thing to note: According to figures I’ve seen lately, mail is about 40% of all Yahoo page views, it’s the silent driver of profits at that company. And that’s why Google is pushing Gmail so hard lately – those pageviews drive profits.