Web 2.0 sites can help businesses in several ways: they provide ease of use for multi-location access via the web, are accessible to customers and potential customers, and save money by eliminating the need for web design and marketing costs. The document evaluates several potential Web 2.0 sites based on criteria like user friendliness, information provided, networking capabilities, usefulness, and security. Sites like Project360, MyMediaRoom, and PDFescape were highlighted as particularly useful for small businesses.