Ajax is a hot topic right now. Not only is it "sexy new technology" but because its use has brought Javascript to the fore-front, it's important to study how to best use Javascript on the client in ways that are smarter than when it was just used for image rollovers.
I don't find browsers incompatibilities very "sexy" but at least, thanks to Ajax's popularity, I had a chance to study Javascript in further depth. Good luck to Mr Prabhakar Chaganti for his new book. [ April 02, 2007: Message edited by: Satou kurinosuke ]