This is just a very simple small plugin which I created because none of the blood plugins out there seemed to work for my server. It adds blood particles to players and mobs when they are damaged by another player or mob.
There is no config file for it, however I will probably add one in an update along with different effects for each mob.
To install it simply drag it into the plugins folder of your server, and then you are ready to go and punch some mobs :D
Check it out on my PvP server: mc.vortexnetwork.net

This is my first plugin, so if you have any feedback / suggestions, I would love to hear from you.