It's not enough that New York City Mayor Michael Bloomberg kicked smokers out of restaurants and onto the curb. He wants them to kick the habit altogether.

Bloomberg started an anti-tobacco initiative three years ago, hoping his example -- he kicked in $125 million out of his own charitable wallet -- would prompt others to take up the cause. That strategy is now paying dividends, with the Bill and Melinda Gates Foundation now on board.

Bloomberg and Gates just held a news conference where they announced that Bloomberg will put up an additional $250 million, while the Gates Foundation pledges to spend $125 million, including $24 million going directly to Bloomberg's effort.

p.s. The Gates Foundation is spending much more money -- $500 million -- on its new downtown Seattle headquarters. Hey, they're entitled.