A system and method for facilitating ad hoc compilation of geospatial data for on-line collaboration is provided. One or more categories under which to store waymarks in a geospatial data sharing database with an exportable schema are dynamically defined. Each waymark associates geospatial data with metadata as an unstructured information cache. At least one variable is dynamically associated with each such category to identify the metadata. One or more attributes specifying a type of metadata storable in identity are defined with each such variable. The categories are published on-line by storing the geospatial data and the metadata as waymarks under one such category and accessing the stored waymarks in response to user requests.