This is a conference attendees map for QGIS geeks :-).
To add yourself to the map follow the instructions below to open the attendees project or open the attendees layer.
Then navigate to your work / home town and start editing the atendees layer.
Leave the id blank and fill in your name and organisation.
Then save your edits and your dot will appear on the map!

Either download this project file and open in it QGIS

Qgis project file: http://qgis.org/2015/qgis2015.qgs

OR (if that is too easy for you ;-) ): use these Postgis connection parameters

Name: QGIS-2015
Host: plugins.qgis.org
Port: 5555
Database: gis
Username: docker
Password: docker
(Tablename: attendees)