I've been having some more success on the diplo front the last couple games (on Emperor). Some of the things I've noticed: 1. Giving back workers never hurts, but I've not had it be the magic bullet mentioned earlier in the thread. 2. The biggest indicator of where a civ's attitudeis going to go is how much you give in to their requests. If Washington asks you for that extra spice you have, and you say yes, you are well on your way to a friend for life. If you say no he's not going to declare war on you, but it is a first strike. 3. It seems like you can get away with declining to help out in a war if you are on good relations, but decline a couple times and you're definitely going to fall off the BFF list. That's where the "cold war" technique comes into play, where you declare war on a civilization that is distant and that you are unlikely to ever actually have to engage, then take peace at first opportunity. 4. Denouncements from "friendlies" - this one actually is more a case of me rethinking what a "denouncement" means. Originally I thought of it as a "You're a scum sucking pig and I hate you and I'm going to tell everyone you smell." But, I think it could also be interpreted as "You consistently refuse my requests for help, and I'm going to tell everyone about that." Yes, yes, the AI doesn't surface that nuance but it helps me sleep at night and get over the "Why is my friend denouncing me just cause I wouldn't give him my extra incense" problems ;-). 5. Always, ALWAYS, denounce a civ before you declare war. Think of it from your perspective, if Lizzy suddenly hauls off and slugs Cathy with no warning you think "wow, crazy chick, I gotta watch her." But if she denounces Cathy, you are not the least surprise when Lizzy's longbowman go knocking on Cathy's door. Same works in reverse. 6. Never, ever, declare war on a civ you are currently friends with, even if another civ asks you. Why? Well, isn't it obvious? If you are willing to slug him on a whim, what's to prevent you from slugging me. Sure, you're my "ally" but with friends like you, who needs enemies? That's why you're also going to be eyed with suspicion by everyone, even people who were once your friends. 7. Not be in any danger of winning - ok, not sure about this last one ;-) But it is only fair to say that in each of these Emperor games I have been in the middle of the pack (I tend to play with 12 or 13 civs on standard size maps). So, since I'm not a threat maybe they like me more? Anyway, I am finding diplo more fun now that I have worked out what I think is some underlying logic to the AI experience. In any case, I have now had several games where I have had longterm friendships and even "friends for life."