Fan base? Now there was an interesting term, and Severus felt his eyebrows rise before he gave a wry smile. Not so much at the term, however, as the image it called to mind: a club house where his fans met, with a secret knock and all that rubbish. He might have known, if the books were from Potter's point of view, that some people would have thought him evil. Lily's son had all the subtlety of a size two cauldron upside the head. But other people, who could apparently see the difference between giving someone a detention and wanting them dead, had read between the lines and saw him for what he was.
Not that that made things much better, he supposed, but they seemed to be fond of him regardless. Hence, the autographs.
"Not yet," he answered after a moment. "Or at least not all of them. I've read part of the last book ... from my death to the end." He shrugged slightly, his expression turning ever so slightly sheepish, since she already knew this -- or so he'd thought. "I wanted to see how the war turned out." Because he had gone to his death thinking the Dark Lord would win. But thankfully, that hadn't been the case.