Eve Online with bad fleet commander = 1000 pilot rage!!!! The countless times your FC fails to make a decision and then calls a bad one, resulting in major fleet losses. If the FC is new, the mistakes are forgiven as a lesson learnt. If the FC is a mister-know-it-all-ranter and abuses every person who judges his calls, then he deserves the rage from his fleet.
Still with Eve, Alliance members who fail to assist when you are caught in an ambush. You know the scenario, you are piloting in Alliance null sec and you are suddenly jumped by a red. You have 20 other alliance pilots in the system, so you call for back-up whilst your try and tank the stealthy hunter. If you die, then hopefully the alliance will get the kill and make the system safer again - NAH! They do absolutely feckall (mostly dock) and say sorry about your losses, while the assailant robs your wreck.