1- A place collecting a certain group of people, or people who are willing to gossip about a certain topic. (e.g. Lolcow, Kiwifarms, 4chan, 8chan, etc.) Usually of which are offensive.
2- A website or area of the internet which helps you make money.
1- "This Lolcow.farm thread is such an (internet) farm! It's only attracting homophobes to talk about same-sex marriage laws."
2- "I found a (internet) farming website, and I've grinded 5 bitcoin overnight!"