Usernames are limited to 15 characters, and passwords are limited to 30 characters. The characters that are allowed in usernames are a-z, 0-9, and the underscore (_). Capitalized letters and the hyphen (-) will be converted to lowercase and the underscore, respectively.I think it is unwise to mention passwords in the middle of a paragraph which is mainly about usernames. Personally, I would either split this into two sentences:
Usernames are limited to 15 characters, and the characters that are allowed in usernames are a-z, 0-9, and the underscore (_). Capitalized letters and the hyphen (-) will be converted to lowercase and the underscore, respectively. Passwords are limited to 30 characters.or, alternatively, move the "Passwords are limited to 30 characters" bit to the bulleted list above this paragraph.
Update: In the same FAQ, I think the sentence "Additional posts will cause an error message indicating that the queue is full to be displayed to the user attempting to post." should be rephrased to "Additional posts will cause an error message to be displayed to the user attempting to post indicating that the queue is full."