The pgn4web user base is constantly growing.
The most recent addition is the Hungarian chess federation using pgn4web for the live broadcast of their team games at the chess Olympics in Khanty Mansyisk. Look for the live and archived games pages.
The popular ChessGames website also features as option the use of pgn4web to display games from their database. The pgn4web option has been introduced to support users of portable devices (tablets like the iPad, phones like the iPhone, Android and Blackberry) where their standard java based viewer is not a supported option.
Last but not least, pgn4web with the associated plugins/extensions has been upgraded to version 2.11 including mainly minor bug fixes.