I wasn't ridiculing you or anything. I was making a practical point. There's already (as of about 6 weeks ago) new spam that's reached the network. These are files that show up as the same size as the original. The way to detect them is they show up with hundreds or thousands of results. With 100 for the 1st, perhaps 99 for the next. These are "fake" files & can't be downlded. That's why size filtering won't work. I believe a size filter would be handy for other purposes (I requested it 2 years ago), but not so for the purpose you were suggesting. Here's another type of spam:
Sponsored Results (click on link)
Below is the search results for the new spam of fake files with the 2nd part of the gif being the lower part of the search results. BTW on my mac after several mins of trying to connect to these fake files, they would self-cancel. This doesn't seem to occur for people using windows.
If you're a softw engineer, perhaps you have other suggestions about how to fight these organisations/groups who are trying to destroy the gnutella network.