Gnutella Forums - Private clubs ??? Unable to download...

Occasionally I'll complete a search of certain video files by a specific video producer. I've noticed that maybe once a week it appears like a group of users come online to swap these files for approximately a hour or two and then I will not be able to locate any of those files throughout the week or longer. So it seems like some type of coordinated effort between 5 or more people to swap these files. The problem for me is that in the rare occasion that I locate these sought after files through a search I can not establish a connection to download any of them. However I seems that the file owners are allowing individuals within that group to swap files because they all go online at the same time. It's like I am being restricted or something for some type of private club. I am getting so frustrated. :bangh: Can anyone tell me what's this all about? How can I let them know that I have similar files I'd like to share if I can only manage to connect?