Final answer:
It is not possible to determine who wrote the forward to 'Yes, I Am a Vampire' without more context on the specific book edition or author.
Step-by-step explanation:
The forward to the book Yes, I Am a Vampire is an introductory section written by someone other than the primary author of the book. It typically serves to introduce the book and offer some perspective on its contents or themes. However, without knowing the specific book being referred to, as there can be multiple books with similar titles or variations thereof, and forwards can be written by various individuals, it is not possible to determine who wrote the forward to Yes, I Am a Vampire unless more context is provided.
If you have a specific author or edition in mind, please provide additional details so that a more accurate answer can be given.