Hi,
1) What is the criteria applied when moderating content?
Content must be concise, correct, easily understandable, and useful. If that's not the case you can improve it. I know, this is very vague. If you feel like some article is not good enough just make it better.
2) The "Moderation" parragraph says: "After some time has passed (at least one month) you may *delete* articles or comments which are *useless*". How does a moderator decide whether an article has become useless? Is there some kind of criteria or process?
An example: Someone added something like the following comment to my BFS2 RFC: "ZFS is the most buzzword-compliant FS." Now, this comment didn't add any value to the article. It contained no useful information and it was not a suggestion. Nobody needs such rants.
Another example: Imagine an article leads to a flame war or off-topic discussions (e.g.: OS X is better than Linux; you plan to visit your grandma; whatever). In that case you may delete those comments.
If an article becomes invalid (e.g.: "how to use CVS" although we switched to SVN) it should either be deleted or rewritten.
I didn't refer to anything special. I just tried to make clear that we don't have to keep every comment. This is especially important for RFCs and similar development articles which should not blow up with comments because that would make it very difficult for the developers to filter out the important information. It should also be okay to summarize the essence of a thread into one single comment. But I'd say that news or other non-development articles can be mostly kept unmoderated.
3) Who are the moderators, and how does one become one?
Well, those who have enough access rights to edit and delete content can do this moderation. You can become one by writing good articles, for example. Major wiki contributors (those who fix and improve wiki articles, regularly) can become moderators.
And who are the moderators?
Koki