I'm currently trying to develop a method of faster than light travel for a science fiction novel I'm working on. The one I was trying to dream up ended up being in all practical sense very similar to a warp drive. I read in a book on science fiction, a while back, that when writing science fiction one should avoid warp as an FTL method unless you are writing a Star Trek novel. The author believed that the concept of Warp was too unrealistic and that if an author can't come up with anything new then should just use Hyperspace, as it is more realistic, however, everything I've read recently suggests that Warp is the most plausable way to travel faster than light. Is warp, or warp-like, technology something to avoid when writing sci fi? Is it over-used? Or is it perfectly fine? What is your opinion?