When you go out to farm, you start by looking on the map for suitable candidates: Players with no or weak alliances, low-to-medium might and relatively low level. However, many of your neighbors will initially appear to still be under the seven-day-invulnerability dome.
This limits your farming possibilities, but more annoyingly is the fact that many of these players have been inactive for more than 7 days and are in fact farm-ready. We only need to pop their bubble.