Thanks, Derek!
Those of you who know us know that we're very strong in the geek department, but a bit lacking little details like, well, design. If those designs look like they were done by a somewhat color blind programmer, well, that's because they were done by a somewhat color blind programmer (me, that is).
Now that the tech is solid, future banners will be executed by someone who is not a menace to Photoshop's reputation. And, as Gateway noted, IP address to location isn't an exact science, but it will get better with each (monthly) update to the database.
Cheers
-b