I recently did a search (I think it was a "browse host" on a song I had found before, but I am not sure, it may have been right click and "search more") and came up with a strange result.

The items listed in the "artist" section are actually song titles, and they come up a number of times (with different, real-looking, names, just like you get when different users have their songs written up differently) but if you look at file sizes they vary a lot even within the same bitrate.
I downloaded two songs, which happened at incredible speed (250 KB/s or s'thing like that, whereas normally I am very happy to find a song I can download at 20-30 KB/s) but when I played them they were just static noise.

What kind of host did I find? Is it some spammer, or is it an ultrapeer or whatever that doesn't actually has the songs but lists what's around, or what? Why would such a result even come up on my screen if I cannot do anything with it?

See also attached screenshots (well, partial shots, to keep below 100KB ).

Attached Thumbnails

   

Some type of spam probably. The variation in bit rate v's size is a telling sign that some of those files won't play properly. mp3 Bit-Rates Versus File Sizes (click on link), & this link might be of help ... Beware of Fake files in search results