Re: Loading bbpress after codeigniter
register_globals is a gaping security flaw that’s been turned off in every recent PHP version. If you have it on, PHP takes anything passed by $_GET, $_POST, $_COOKIE and $_SERVER and turns them into global variables (i.e. ?book=1 in the $_GET array becomes $book = 1). I’d recommend turning it off ASAP.
The edit link turns itself off after a while, it’s not just limited to if anyone else has posted 
Ah, and good luck integrating bb-load.php, I could never get it to even play nice with WordPress.