Amazon adds social functions

An interesting article on new Amazon features: has quietly introduced a new feature on its Web store that lets customers post photos alongside product reviews–its latest effort to build a sense of community among customers.

The e-tailer introduced the feature, called Customer Images, last month for certain product categories including electronics, apparel, sporting goods and musical instruments. It added kitchen items, tools and hardware on Tuesday. The feature is in beta, meaning the company is still testing and tuning it.