Twitter is a great marketing tool, and it’s one we encourage our authors to engage in. It’s a fast-paced way to reach a lot of people at once, and engage them through the use of hashtags and discussion. However, many writers use Twitter wrong.
Asking a publisher about their marketing techniques is an appropriate question. Particularly when approaching a green indie press (like we are), so I am always happy to discuss that with potential clients. Particularly since traditional publishing has a bad rap with writers for their lack of attention to marketing and antiquated marketing methods.