Ad Age reports on Yahoo and Twitter striking a deal to integrate the micro-blog into Yahoo’s online content and services such as mail, as well as add Twitter feeds to Yahoo search engine queries.  The news outlet says the deal gives Yahoo a social network as a partner rather than a competitor, along with a data feed that s estimated to be about 50 million Tweets per day.  For Twitter, an ultra-popular but not necessarily a moneymaker service, it s about revenue and about tapping into Yahoo s 600 million users.  Read more at Ad Age {link no longer active}.