In this paper we present ArsMeteo • , a Web 2.0 portal for collecting and sharing digital (or digitalized) artworks, like videos, pictures, poems and music. The ArsMeteo • contents are enriched with a variety of meanings by the tagging activity of all users of the community, both authors and visitors. In this setting, innovative artistic approaches to tagging and tag-based browsing has been thought in order to create a dynamic and fertile background for artistic experimentation and cooperative artistic creation.