Yahoo has stepped forward and has planned to offer incentives for their email users who will use yahoo search has their primary search engines,

Incentives include:

"No Yahoo Mail ads.
• Unlimited Yahoo Mail storage, versus the one gigabyte now provided for free.
• Outlook Access to Yahoo Mail. Users could use Outlook or Outlook Express to manage their Yahoo Mail as well as download and read it while offline. This is not currently offered.
• Five free music downloads a month for playing on a PC or portable MP3 player.
• Discounted music subscriptions. Users would pay nothing for the first month of unlimited access to Yahoo Music Unlimited and $3.99 a month thereafter, rather than $6.99 a month for unlimited access.
• Donations to charity. Yahoo would give a percentage of revenues generated from user searches to nonprofit organizations of the users' choice.
• PC-to-phone calling credit. Users could receive $5 in calling credit per month for PC-to-phone calls over Yahoo Messenger with Voice, which costs 15 cents a minute.
• Netflix discount. Users could receive one month free Netflix DVD rentals and pay $10.99 thereafter, rather than $17.99 a month.
• Discounted Yahoo Personals subscription. Users could receive the first month free for joining Yahoo Personals and pay $19.95 thereafter, compared to the current cost of $24.95 a month.
• Frequent flyer miles. Users could earn 250 frequent flyer miles each month that could be transferred to most major airline mileage programs. "

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