About reputation, Am I right?

[reefer addict]

most of the games i play i try to keep my rep clean, but it almost always fails due to some other civ getting detroyed and breaking our deal

but on the plus side i can now do what i want without worring about my rep, which can be twice as fun

[Wormwood]

Well, I guess the partial answer to the problem is: DON'T DO TRADES WITH AI's ABOUT TO BE WIPED OUT. If you must trade, trade a tech for a lump sum of gold. By that point, any Civ wiped out is usually behind tech wise, so it won't hurt you.