The 12th International Symposium on Web and Wireless GIS

Some of you may be interested in this event...

http://sensorweb.geomatics.ucalgary.ca/w2gis2013/

Free GIS Datasets - Categorised List

A very extensive list (approx 300 data sets) worth having as a resource...

http://freegisdata.rtwilson.com/ 

The ArcGIS Metadata Toolkit

For anyone already on ArcGIS 10.1 or almost there, this might be of interest to you:

http://blogs.esri.com/esri/arcgis/2012/12/20/metadatatoolkit/