This wiki provides space for collaborative documents and planning which do not belong into the main QGIS documentation.
If you want to request and discuss new features for QGIS, please open a feature request
If you want to contribute to the wiki, you need an osgeo ID. You can create an account here.
To create a new page, simply browse to the address you want it to have. e.g. for a page relating to QGIS Desktop, simply add the page title after this in your address bar: http://hub.qgis.org/wiki/quantum-gis/