Outlaw-
I have never heard of any Witness that I know not eating hot dogs for any reason. I know about the blood sausage thing, but as a kid, and even as an adult witness, we would have cookouts and have hamburgers and hot dogs. I never knew of a problem with it.
This reminds me of one thing that I always thought was strange......The WTS used to warn members to look at their pet food and make sure it didn't contain blood. However, the command to abstain from blood was meant for humans, not animals. For God's sake, they kill other animals and eat them blood and all. Anyway, I always thought the dog food thing was stupid.