Good info, I know my older Cuddeback can only take up to a 2GB card, the newer Moultrie goes to either 32 or 64 GB.
Be advised that not every SD-based digital camera can handle "any" SD card. Some can only take up-to-1GB, or some can use 2 GB or higher. You really need the documentation or else it is trial and error. Most these days can take at least 2GB cards, which are plentiful and cheap.