The Yahoo! Search Marketing blog has announced changing the minimum bid amounts on Sponsored Search keywords. Yahoo! says, following the auction model we are changing the way we set the minimum bids required to participate in a Sponsored Search keyword market, intended to help advertisers better align their minimum bids with the value and quality of their keywords.
In the next several weeks, we will start calculating a variable minimum bid for some of the keywords you’re bidding on. That means that sometimes the minimum bid may be lower than 10