Depends on who you are connected to since LW cannot search the entire gnutella network, otherwise each search would take hours to complete. Thus LW has a search horizon limit. There might be spammers within this limit.

I just did a 256 bitrate search using LW 4.16: 166 results. 13 didn't show bitrate or length. Of the others, altogether 19 were true spam after analizing the file sizes or lack of bitrate. Many files showed as spam with the trash icon but were not spam.

You might get different results on different days, again, depending on ultrapeers you are connected to & who is online, & how many spammers happen to be within your search horizon.