Ever noticed how every team turns right at the start?
Warsong gulch:
As soon as the match starts you turn right to your team's graveyard then stick to the right of the map with only a few people going to the middle at the start.
Arathi Basin:
You come out of your starting area and your team taks the base to it's right; Horde, GM, Alliance, LM and a few go BS.
Alterac Valley:
Turn right as soon as you have the option to turn and then stick to the right hand side of the map.
Eye of the Storm:
Both teams zerg the opponents base that is on the right hand side of their own starting area.
Isle of Conquest:
Both teams, again, turn right from their starting point; although this can be altered by spamming at the start to go somewhere else, but it's just generally accepted this as the default base for each faction
Strand of the ancients:
Here both teams start at the same spot and which gate do most teams lean towards? The green gate.
However it is always blue gate that is the most well defended, guess which side it's on from the defenders point of view.
Anyway, that's just something I noticed on my way to sleep last night after too much PvP and narrowly remembered this morning. <3