This story was good for Kuznetsova
Yes, I know that it was a "negative" story. However everyone now knows that it was false and that she's innocent. So what good came out of it? Let's see. She was seen as one of the most boring top players (perhaps in the history of the game). Fans didn't care about her, in fact she even complained about how she gets no attention, she basically was seen as this boring player that nobody even cares that much to see. Even the US OPen win didn't help.
But now, because of this story, everyone knows her a lot more, photographers are there on her matches, fans are there, everyone is talking about her, she's actually now seen as a "personality" like the other top players. And all those people know that it was a false rumor, so they will become supporters or at least follow her career and know about her a little more. This was a blessing in disguize in my opinion. There were a couple of days of suffering, but on the long run, she will gain from this because everyone knows she's innocent and she's now seen as a STAR.
Before, the average fan would have said "Kuznestova vs Serena? bah, who cares about Kuznetsova she's so boring, this is not interesting". Now they will say "Oh it's Kuznetsova vs Serena, interesting match". Let's face it, before this incident 99% of people didn't give a damn about Kuznetsova. But now she's become popular. Her wish has come true.