Have you ever gone to a website and kicked the tires? Well, uTest, a Boston-based startup, pulled 600 software professionals together from 20 countries to do exactly that.

The company, which has a bench of 21,000 professional testers from 159 countries, wanted to see which of the three major retail websites -- those run by Amazon.com (AMZN), Walmart (WMT) and Target (TGT) -- is the least buggy. The winner: Amazon.

Target Corp. (NYSE: TGT) will be divorcing itself from longtime online selling partner Amazon.com (NASDAQ: AMZN) in 2011 as it builds its own website and starts having a more direct relationship with its own online customers.

Target and Amazon.com, which began their partnership in 2001, have been the largest example of a large mass retailer teaming up with a leading online retailer to handle such areas as e-commerce transactions, online customer service, inventory, site content and shipping, and fulfillment. Sometime before the holiday shopping season of 2011, Target will launch its own, in-house website and will cease to have www.target.com hosted and serviced by Amazon.com.