Any pseudonym will do, as long as it doesn't strongly resemble the forum nickname; you can even use your real name, although that could also be a giveaway. The newspaper displays the questions, answers, and pseudonym of the person being interviewed. I decided that using my real nickname might be too revealing, so this way, the fairy will have a slight advantage, and the others can guess who it might be.
Of course, this is only if they need to be non-revealing.