MSN, Microsoft's web portal and the default homepage for the Internet Explorer browser, announced on Tuesday it has signed a multi-year deal with content recommendation platform Taboola.Neither company would comment on the size of the deal, but it will see Taboola take over the content recommendations on MSN in the 50 markets in which it operates. If you browse MSN.com today, you'll see Taboola content recommendations from publishers and advertisers right at the top of the homepage, and within articles. They're tailored to each user, so it's unlikely any two users would see the same homepage.MSN has also taken on Taboola's "audience exchange product," which will see its technology used to predict which Microsoft services should be promoted to users. So a user browsing MSN on a Windows 8 device might be served an ad prompting them to upgrade, whereas an Android user might be pointed towards downloading Windows apps.