I started writing the PVOL (Planetary Virtual Observatory and Laboratory) system during the first NVO Summer School which took place in Aspen (Colorado, USA) in the summer of 2004. The system is up and running since November 2004 in the Ajax Cluster of the Planetary Sciences Group, in the University of the Basque Country, and available at www.pvol.ehu.es.
We currently have more than 200 registered contributors (50 of them allowed to directly publish new images), more than 9200 images of Jupiter (first one from year 2000) and more than 1800 images of Saturn. Last image received was just from yesterday:
Good news is that not only amateur observers are publishing lots of new images of Giant Planets every day (mainly Jupiter and Saturn), but also that two of the guys in the Planetary Sciences Group also wrote an article about the PVOL system and how it helps on the research of the atmospheres of these planets. The publication is not available online, it seems, so if you want to take a look at it you’ll need to buy the magazine (Spanish only):