I dont really like the faq.php because of the search engine limitations. When searching for the question the nomenclature used by the individual searching for the thing they want to learn might be different from the one used in the database. In contrast if the one made by Twilight is used people can get somewhat of an idea what they are looking for and if they dont get the relevant information they need they might pop a pm asking for more specific information.

In my opinion if the php doesnt use a bioinformatics marking grid and correlates most asked questions with question referring to the same subject but use different nomenclature then it will be worse than the forum based one.

The best solution would be a php that is more domain specific. For example if you can yse the php but is limited each time to the aspect you are asking about be it ingame, forum based or account based.