Can 27-year-old 4Info founder Zaw Thet's mobile ads keep Yahoo independent and save Yahoo CEO Jerry Yang's job? No. But 4Info can help Yahoo make money texting users with updates from Yahoo news, horoscopes, sports scores and weather forecasts. Today 4Info and Yahoo announced a trial partnership to split revenues earned by ads 4Info will serve against Yahoo content sent via SMS messages to users who have signed up for updates.