It's kinda hard to talk about all acquisitions equally. Take Android for example: founded in 2003, acquired in by Google in 2005 and launched in 2008 (launched

It's kinda hard to talk about all acquisitions equally. Take Android for example: founded in 2003, acquired in by Google in 2005 and launched in 2008 (launched widely in 2009). I would call it both a successful acquisition and a successful Google product. Groupon, OTOH, seemed like a wholly different thing - they already had a big name, lots of customers and independent identity. Seems like google wanted to buy them to move into a whole new area, rather than building them slowly into the company like Maps, Android, Docs etc