We're going to start with the most popular FAQs, based on the LJ portal module. After those are done, another process (TBD) will be used to pick FAQs. Since there are a whole lot of FAQs, this post will provide a list of reviewed FAQs to limit repetition.
Most popular FAQs (as of 9/24 portal module):
[9/24] FAQ 75: How do I hide part of my entry behind a link? What is a lj-cut? (11431)
[10/3] FAQ 226: What are tags? How do I use them? (8554)
FAQ 1: What are userpics? How do I upload them? (7812)
FAQ 67: How do I add a link to another journal or web site? (7717)
FAQ 6: How do I add images to my journal entries, user bio or comments? (4846)
FAQ 11: How do I validate my email address? (4722)
FAQ 46: How many userpics can I have? (4131)
FAQ 24: How do I control who can read my journal entries? What are security settings? (3907)
FAQ 207: How do I ... (3335)
FAQ 102: What are custom friends groups? How do I use them? (3045)