PPC Primer is written by web developer and search marketer 
Yahoo! SM dumps monthly minimum spending requirement
This just in… Yahoo! Search Marketing has just announed the elimination of the $20 monthly minimum spending requirement for Sponsored Search. Previously, all Sponsored Search advertisers were required to spend at least $20 a month in click-through charges. With this new change to their policies, advertisers can now spend as much or as little as they choose, with no minimum to meet.
