Um, I would not call joining a signature campaign easy, I would disagree to that notion calling a signature campaign an easy thing to do. Many signature campaigns have requirements that sometimes difficult to achieve, like bonuses by answering in some particular thread or forum. If you are comfortable with the topic and you are well versed with it then by all means you answer on that topic alone. But if the requirement of the campaign is for you to create "intelligent" responses, you must be well versed with the topic and when you ran out of posts for the ones you truly know, then that is the time you do the research of knowing these topics. So that you will not be answering just rubbish and guesses on posts. I myself been spending hours just to answer 2 or 3 posts because the ones that I am really good at, only appears on posts like 3-4 years back. So, just to set the record straight, not all who participate signature campaigns would find doing this easy - unless you are a writer and a know it all I that can answer posts like an encyclopedia, I guess.