When searching on the net for another puzzle posted here, I discovered this exciting word puzzle site :
http://shygypsy.com/farm/p.cgi
You get a network with a centralised theme, and you can enter different words, where new nodes will be created. The eventual goal is to reveal all nodes on the 25 inter-connected networks. It's a huge puzzle and it says on the website that we probably need collaboration from many to solve it together. So here we go. Let's see how long it will take us to crack it!
Some early progress on the initial network ("On the farm"):
ox, bull, cow, chicken, rooster, hen, egg, milk, pig, sheep, goat, horse, barn