I'd think that if your split the deals section, flight deals section, and cc/points redemption section, you may get more followers that are dedicated to each specific topic. Right now, DDMS isn't known as a travel or cc blog, even though Dan is known as a travel blogger. I'd think you may attract more of the outside world while appealing as a travel blogger if there's a section of the site completely dedicated to that.
You might also get some more twitter followers if you have a second twitter feed that only tweets flight deals (although that can easily backfire by losing current followers to the less profitable feed). Many people like following DD, but don't want to get bothered every 30 seconds with another amazon gold box deal. Obviously, that would likely defeat the purpose, as DDMS revenue doesn't come from Walmart or United glitches.
I would think, however, that a separate twitter feed for the cc posts (that much of the following deems completely irrelevant and glazes over) would make sense.
Obviously, you'd know more about this than I do; I'm just giving my uneducated thought.