I think I know what you mean. Just because it shows up that one person has the file doesn't mean people can download from it. (For example, it might be one of the 400 files that you have but not one of the ten that people are currently downloading from.) So unless the host is on for an extended period of time, I won't be likely to get very much from them until I become one of the ten people with one of the ten slots. This really explained a lot! Thank you for such a detailed explanation!

Also, is it worth the money to get Limewire Pro? I have basic and my brother has Pro. He says that even with the grouping option, he can't tell much difference between both versions. He regrets having spent the money when he could have gotten the same service for free.