TheDS said:
The Culture Bomb may have a bug: Whenever I have used it, the borders of the city don't seem to change, regardless of whether the city is in revolt or not. Worse, with all that culture, now you've got a LONG way to go till you get to the next border expansion, and it's still not going to take you to were your borders ought to be if youd grown it there without the GA. Sending in a second GA doesn't make things better, only worse, because now you're even FARTHER from the next border-expansion.
The Culture Bomb adds a lot of culture to the city
only This affects how far the city's sphere of influence reaches. You still have to culturally control the tiles
around the city, either by having the
plurality of culture in those tiles, or being the
only Civ who is influencing that tile (usually by eliminating its neighboring cities).
A city with 4000 culture (radius of 5) and producing 1 culture per turn isn't going to have as many tiles under its control as a neighboring city with a culture of 300 (radius 3) who's been producing 3 culture per turn for 100 turns. However, if you were to drop the bomb and then crank up the culture to thirteen per turn, then you'd overcome that other city's culture after about 30 turns.
(This is, of course, an oversimplification, since distance is also a factor. The farther you are from the city, the less of that city's culture per turn you get.)
You don't drop the C-bomb on a newly captured city to extend your borders. You drop it to end resistance so you can build whatever buildings you need. If I get a great artist, I usually save them for invading another continent in the modern era, after I've gotten flight. I want an airport there ASAP, so I don't have to ferry my army (and later reinforcements) over by ship.
If you want to expand your newly conquored city's borders, and for whatever reason you aren't planning on conquoring its neighbors, the better use of the GA is to
settle them. It'll get your city radius up to two on the first turn out of resistance,
and will pump a lot of culture into the surrounding area, so you'll get tiles earlier that way.