That's no biggie! It simply means that since you are not an ultrapeer, simply in leaf mode that you will not see all search results. An ultrapeer helps others to connect. It also stops all unnecessary searches going thru to the leaf. Only searches that apply to your files. This helps reduce unnecessary traffic. If you click yes to the option then you'll only see searches that apply in some way to your files be it an mp3 id3 tag or a partial name of a file you're sharing. Sometimes you might see any of these results. I keep it turned off.