As expected, the rampant rumours about Google buying Feedburner were confirmed at the end of last week with another significant acquisition completed for an undisclosed sum. There's a small summary of this purchase on Google's official blog. This purchase sits well with Google's Blogger service but also gives Google access to more web traffic and user data, as well as further advertising opportunities.

In addition to this, last week also saw confirmation of eBay's purchase of StumbleUpon for $75 million. This is perhaps a more unusual purchase, but gives eBay access to the reported 2.3 million users of the StumbleUpon toolbar, which allows users to browse recommended websites within their chosen categories. It's one of the recent success stories in the Web 2.0 / social media category and eBay has got in there before someone else was likely to!