Date: January 21, 2011 02:13AM
In the first year when you try to grab as much lands as you can, you sometimes leave lands empty in the first turn after you take them, since they can't revolt anyway. The result is though, that in the next turn rebelion will be (close to) 25%. So most people, including me most of the times, send in a number of armies, usually equivalent or close to the number of farms. Now the rebelion rate for this turn is still 25%, or 1 in 4.
Let's take a 30k primitive +0 as an example. rebelion 25% and you send in 3. It revolts anyway. So you lose not only the land, at least 2 turns of production, but also 3 armies + the number of armies you need to get it back. OK, then you get a little gold, but what is it, 7? On the other hand if you leave it empty, you have a slightly larger chance for revolt, namely exactly the rebelion % as there are no armies to save it, but at least you don't lose the armies. Now as long as it's not a key frontland and you left it on farns, there's no big problem. Just wait 4 turns for it to farm, and then take it, and it will start making 1 army/turn, or if already a bit influenced, you can start developing it.