i read flat, reply threaded--
so if you have actived the option that emails a notice when replies are made to your post, you'll have gotten one from this post-- (i replyed to you, (threaded mode) not to Annastrophic(flat mode))
even with a threaded reply, its nice to include a word or two of the post you are responding to... otherwise it can get complicated.. (or you post might not make the same point, or even much sense!)
i like having the header at the top-(not the side) it means thread are less likely to 'go wide'-- but we do take care here with URL's and Pre-formated material to try to prevent threads from going wide (requiring the use of the horizonatal scroll bar to read)
Read the FaQ-(i always think its best to print it out.. its only 4 sheet of paper printed, and it help--most BB's have similar conventions... but some have more smilies, and other features.. so you won't end up [u]trying to underline[/u], and end up having BB code showing, (since underline is not a feature.
definately set you number of posts per page to 99, and if a thread get long, expect it to end before 100 posts and to be continued in part II--its hard to move from page to page in old thread... so 99 post per page lets you read the entire thread, and if a thread end before it reaches 100, no post end up getting lost in cyber space..
look in I & A--Jackie (red letter lady) has made some informative posts.. there are posts that have links to pages that give more hints (like how to do ligatures, (æ)and other fun stuff.. just go back page by page, or set do a search on how do i/you--in I & A thread..
or search for technical question--these thread have oodle of info!