The only way to get rid of it is learn how to search. That guide addresses a lot of those issues. Try applying these methods and see the difference

What I was saying about taking stats. Limewire does not collect stats but there are other organisations that try to bring the network down because of the widespread sharing of copyright works. They are for the large part the ones that are doing the spamming. They might be collecting stats as well on who tries to download their files. That's why you should be careful when searching.

Also in that guide is more info on who is spamming the network. Just follow the links in the guide.

Oh and there is spam in all sizes, but the most common one when searching for music is the 134.4 one