The comments and all messages on Members wall can't be deleted. And all Streams, Comments has no the nl2br function.

comments deleting will be added. and will add nl2br.
for the streams, instead of adding nl2br, jcow will limit the status length. if users wants to write long paragraphs, they can use "blog".
Thanks for the suggestions.

I suggest to add a comment system function select comments: graffiti board with a set of functions, emoticons, video or audio comment from Web cameras. And to do that admin and network user could choose which comments can be left ... Thank you.