The aim is to allow entering pgn4web chessboards in blog articles, forum posts and website articles in the easiest way, for example just entering the chess notation within a [pgn] ... [/pgn] tag pair, such as:
[pgn]
[Event "World championship"]
[Site "Moscow URS"]
[Date "1985.10.15"]
[Round "16"]
[White "Karpov"]
[Black "Kasparov"]
[Result "0-1"]
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8.
Na3 d5 9. cxd5 exd5 10. exd5 Nb4 11. Be2 Bc5 12. O-O O-O 13. Bf3 Bf5 14.
Bg5 Re8 15. Qd2 b5 16. Rad1 Nd3 17. Nab1 h6 18. Bh4 b4 19. Na4 Bd6 20. Bg3
Rc8 21. b3 g5 22. Bxd6 Qxd6 23. g3 Nd7 24. Bg2 Qf6 25. a3 a5 26. axb4 axb4
27. Qa2 Bg6 28. d6 g4 29. Qd2 Kg7 30. f3 Qxd6 31. fxg4 Qd4+ 32. Kh1 Nf6 33.
Rf4 Ne4 34. Qxd3 Nf2+ 35. Rxf2 Bxd3 36. Rfd2 Qe3 37. Rxd3 Rc1 38. Nb2 Qf2
39. Nd2 Rxd1+ 40. Nxd1 Re1+ 0-1
[/pgn]
Plugins are available for the joomla, mediawiki and wordpress.org portals.
Detailed guidelines for pgn4web integration are available for the blogger blog (like this one), for the google sites hosting service, for the drupal portal and for the phpBB, the simplemachines and the vbulletin forums.
The following link points to test sites for all those platforms.
All the details available at the pgn4web wiki.
The project wiki also includes a users' gallery; the wordpress.org platform appears to be very popular for personal sites while chessclubs and associations generally prefer joomla.
Have fun using pgn4web on your site!