There are couple of reasons your comment can be in moderation.
– If this is your first comment, then it has to be approved for you to post comments in the future. For new people, we would like them to first get used to the community here before actively participating in the discussions. Your first comment will be approved in 2 – 3 hours. If not please send an email to the admin reminding us that you are waiting on your comment to be approved.
– Sometimes the spam filter will mark the comment for moderation if it has unacceptable language or if there are too many html links.