Generally try to be courteous to other players, even if they're not. More times than not an agreement can be made to benifit both parties if you talk to them. Of course still fight back if being attacked, but try reserving the ganker/harassment guilds for those that have disrespectful members or attempting to prevent others from playing the game on a regular basis. This is not for those that just pvp, including the level 80s that only camp the level 70-80 area... they're just looking for pvp and at least in an area where others can somewhat fight back.
For future simplicity we'll try to keep the list in the following format:
<Guild Name> -- <Reason they're on the list>
(Guilds that seem to recruit jerks and/or gankers. No one will say anything if you kill, gank, camp etc as you're keeping them from doing it to somebody else.)
- Get the F*** Out -- for being all around asshats when trying to capture building of our first city building.
Incursion -- All seen ingame have been on lowbie ganking sprees, appear to be a ganking guild.
(Guilds we have grouped with a number of their members and/or talked with their GM's and seem like good people to group with again. )
- Wolf Pack -- Several of us grouped with their members in a grind group, very friendly and respectful of others.
Blood Dynasty -- ??
Nexus -- One of the other guilds in our guild city area, friendly and respectful. Haven't messed with them while farming and in return they haven't interfered with our group farming.
Mean Old Bastards - have been talking with their GM, seem to have a lot in common with them, same mentality on not ganking/camping other than doing so to gankers and campers.