The document discusses key concepts and technologies associated with Web 2.0, including: - Flickr, a website that allows users to upload and share photos, is provided as an example of a Web 2.0 site. - Web 2.0 sites encourage user participation and interaction through features like user-generated content, tagging, APIs, and more. - Higher education institutions are adopting Web 2.0 technologies like social media to engage with prospective students. However, measuring the effectiveness of these strategies remains a challenge.