Google has just put online over 20 years of archives of the Usenet discussion system network. I've just had a search through the archives to find the first mention of Jamiroquai which was posted to the rec.music.funky group on the 16 November 1992 by Palle Zetterstrand from Sweden, a month after the release of When You Gonna Learn on Acid Jazz. This I believe is quite possibly the first mention of the word Jamiroquai on the Internet and he was quite right when he said "The 12" of the year has arrived."
Jamiroquai played at the Sydney Entertainment Center in Australia today in 2002. This was an extra date added onto the end of their tour after the other gigs sold out so quickly.