Don’t despair if search results carry a [private] prefix. Some of these people just got frustrated once upon a time and decided to whitelist peers rather than blacklist. Often they just want a polite PM asking for access. It pays to be inquisitive, so check their User Info for information.
Chat rooms don’t need to be occupied to obtain or download search results. In fact it’s usually better to ignore them.
99 per cent of users would rather you share 3 albums than 500 system files.