Sister alliances are nearly always lame. Quite often it's players who are on a lot but too farmville to be in the main. Consequently they build pres and make the alliance look 'big' but are poor in a real fight. I haven't been in an alliance with a sister in many months, and won't.
It seems that a lot of long-term players have migrated to smaller 'elite' alliances where everyone keeps more or less the same pres (for res sharing).



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