Probably not. Although there is a nice and fast XML / JSON parser with the name Jackson. It is especially useful for fast XML parsing and JSON processing with JAXB support. ...and one of the developers first name is Mike :-).
Now let see, whether Glassfish v2.1 behind this blog will be able to handle the load, and whether this post will make into the top five :-).
NEW online workshop: Web Components training (online)