I've got a question. Do barbs not spawn in fogged tiles immediately adjacent to visible tiles? I always thought that any fog tile could spawn a barbarian, but I remember someone saying that with the warrior where he is now our entire island would be spawnbusted. However with the warrior in position we can see that the entire island is not visible.
Other than that the GNP jump is great news. We should watch the average GNP, and rival best, closely to see if other teams make similar leaps, as those would imply a balanced resource distribution like LP suggested earlier. If other teams have Gold/Silver/Gems they'll join us soon at the higher GNP, if they don't it will be a while before they can catch us.
Barbs cannot spawn on tiles which are within 2 squares of another unit (even a worker, or an animal or barb). In other words, the warrior has a 5x5 square centred on him in which no barbs can spawn. Once the borders expand, every tile will be either revealed or within that 5x5 square. It is still possible for barb cities to spawn on any fogged tile, but it's unlikely.