The Rubinoos recently filed a lawsuit against Avril Lavigne, claiming that her song Girlfriend (Youtube) plagiarized from their song, I Wanna Be Your Boyfriend (mp3). An authorized cover version of the Rubinoos song performed by Lush and retitled "I Wanna Be Your Girlfriend" has even more similarities to the Lavigne song. Now that the teeming millions on the Internets have gotten into the act, YouTubers are now arguing whether Lavigne is a plagiarist, whether the Rubinoos plagiarized from the Rolling Stones, and whether Ms. Lavigne plagiarized a second time. Now that Web 2.0 has made it easier to uncover musical copycats, I'm hot on the case of Bob Marley vs. The Banana Splits.