Very simple to explain:
I would like to have on my WP blog a page which can behave like a social network profile, or even better like a guest book.
So when you load the page, you would see the page title and then little posts from your visitors, with the possibility to embed images/videoclips.
I've been searching for this and I have to say I found Wp-Wall plugin, which is no longer maintained and does not work on my WP.
So I propose this idea to give to the readers more importance and to involve them much more.