I am not sure what you mean by blogs on web 2.0, I would think that all blogs are considered web 2.0
Wikipedia defines web 2.0 as " The term "Web 2.0" is commonly associated with web applications which facilitate interactive information sharing, interoperability, user-centered design and collaboration on the World Wide Web. Examples of Web 2.0 include web-based communities, hosted services, web applications, social-networking sites, video-sharing sites, wikis, blogs..."
Anyways, my favorite for keeping up with the latest financial news is the BudgetPlanners.net blog
hope this helps...