For all comments or questions about paleoseek.net please reach me via https://google.com/+DouglasFils.
The general search uses the google custom search interface. It prioritizes the results from the 600+ whitelisted sites in the resource data set. However, it is open and will return results from sites not in the list if they rank high enough in its ranking.
The data search uses the google custom search interface with a restriction to only return pages that define themselves as schema.org/DataSet. This is based on work by others (links here) as demonstrated at http://datasets.schema-labs.appspot.com/
The dataset started as a crowd sourcing effort at the EarthCube Paleogeoscience Domain Working Group meeting in Minneapolis Minnesota. From there it was worked on by Douglas Fils and Anders Noren to add further items to the collection.
Later the set became part of an effort by the Cyberinfrastructure for PaleoGeoscience RCN (http://workspace.earthcube.org/c4p) funded by the NSF EarthCube effort. As part of this effort a greatly expanded version of the list was created under the guidance of Dave Anderson, of NCDC/NOOA. Student workers Ryan Lingo, and Kaleb Horlick, under Dave's guidance have generated the latest version of the list available in the resources section.
Development of this resources has be supported by the following efforts
At present there are three users of the list: