According to a comment on SEOChat forum, Yahoo indexes faster than Bing. Bing places more value on on-page content but tend to index new pages really slow.
http://forums.seochat.com/yahoo-search-optimization-60/yahoo-seo-strategies-277538.html
Mid Sized SEO Monopoly networks generally run under 1k/Month and include 5-10 new sites and SEO campaigns in your niche.
