The thing is, that there is no field to type sth in, except the one from the first riddle. But that one accept only ONE message and doesn´t work with another.
Then we have the main post of this riddle, where more information could be hidden. But I´m 00% sure there is NO hidden link in the first post.
Another possibility is, that there is another thread, unseen by the most of us, which contains more information.
The last possibility I can think of, is to wait and to see if my message before will turn into dust OR if collaboration is indeed needed here. (or both?)